Delhi University Entrance Test (DUET) 2019 PhD in Environmental Studies Previous Queston Papers
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions 2 / 13
5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions 1 / 13
1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions 2 / 13
5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions 1 / 13
1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions 2 / 13
5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions 3 / 13
9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions 2 / 13
5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions 3 / 13
9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
7/7/2019 192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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17)
18)
19)
20)
Parsimony [Option ID = 20613]
A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the highest 25% of measurements and the highest
value of the lowest 25% of measurements is called the
[Question ID = 12642]
1. 50% confidence interval [Option ID = 20565]
2. Standard error [Option ID = 20567]
3. Standard deviation [Option ID = 20566]
4. Interquartile range [Option ID = 20568]
Correct Answer :-
50% confidence interval [Option ID = 20565]
Unidirectional flow of energy in an ecosystem is governed by the
[Question ID = 12672]
1. First Law of thermodynamics [Option ID = 20685]
2. None of these [Option ID = 20688]
3. Second Law of thermodynamics [Option ID = 20686]
4. Both first and second laws of thermodynamics [Option ID = 20687]
Correct Answer :-
First Law of thermodynamics [Option ID = 20685]
A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures because of the phenomenon of ??????...
[Question ID = 12636]
1. Niche divergence [Option ID = 20544]
2. Niche gradient [Option ID = 20542]
3. Niche complimentarity [Option ID = 20543]
4. Fundamental niche [Option ID = 20541]
Correct Answer :-
Fundamental niche [Option ID = 20541]
Hardness of minerals is measured in
[Question ID = 12674]
1. Clastic Scale [Option ID = 20695]
2. Talc Scale [Option ID = 20693]
3. Moh?s Scale [Option ID = 20694]
4. Beaufort?s Scale [Option ID = 20696]
Correct Answer :-
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions 2 / 13
5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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17)
18)
19)
20)
Parsimony [Option ID = 20613]
A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the highest 25% of measurements and the highest
value of the lowest 25% of measurements is called the
[Question ID = 12642]
1. 50% confidence interval [Option ID = 20565]
2. Standard error [Option ID = 20567]
3. Standard deviation [Option ID = 20566]
4. Interquartile range [Option ID = 20568]
Correct Answer :-
50% confidence interval [Option ID = 20565]
Unidirectional flow of energy in an ecosystem is governed by the
[Question ID = 12672]
1. First Law of thermodynamics [Option ID = 20685]
2. None of these [Option ID = 20688]
3. Second Law of thermodynamics [Option ID = 20686]
4. Both first and second laws of thermodynamics [Option ID = 20687]
Correct Answer :-
First Law of thermodynamics [Option ID = 20685]
A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures because of the phenomenon of ??????...
[Question ID = 12636]
1. Niche divergence [Option ID = 20544]
2. Niche gradient [Option ID = 20542]
3. Niche complimentarity [Option ID = 20543]
4. Fundamental niche [Option ID = 20541]
Correct Answer :-
Fundamental niche [Option ID = 20541]
Hardness of minerals is measured in
[Question ID = 12674]
1. Clastic Scale [Option ID = 20695]
2. Talc Scale [Option ID = 20693]
3. Moh?s Scale [Option ID = 20694]
4. Beaufort?s Scale [Option ID = 20696]
Correct Answer :-
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21)
22)
23)
24)
25)
Talc Scale [Option ID = 20693]
Methemoglobinemia is caused due to pollution of
[Question ID = 12668]
1. Nitrate [Option ID = 20672]
2. Copper [Option ID = 20669]
3. Iron [Option ID = 20670]
4. Mercury [Option ID = 20671]
Correct Answer :-
Copper [Option ID = 20669]
What does the steep slope of a rank-abundance plot indicate? [Question ID = 12639]
1. greater abundance of dominant species in the community [Option ID = 20554]
2. greater abundance of rare species in the community [Option ID = 20555]
3. greater dominance of common species over rare species in the community [Option ID = 20556]
4. greater dominance of rare species over common species in the community [Option ID = 20553]
Correct Answer :-
greater dominance of rare species over common species in the community [Option ID = 20553]
An experiment that demonstrated the importance of spatial heterogeneity in stabilizing predator-prey interactions is called
[Question ID = 12650]
1. Allee?s experiment [Option ID = 20597]
2. Huffaker?s experiment [Option ID = 20598]
3. Organism interaction experiment [Option ID = 20600]
4. Ecosystem experiment [Option ID = 20599]
Correct Answer :-
Allee?s experiment [Option ID = 20597]
Walkley and Black?s Rapid Titration Method is used to estimate
[Question ID = 12649]
1. Soil phenolic levels [Option ID = 20594]
2. Soil organic carbon [Option ID = 20595]
3. Soil phosphate levels [Option ID = 20593]
4. Soil microbial activity [Option ID = 20596]
Correct Answer :-
Soil phosphate levels [Option ID = 20593]
When a mixture of Azospirillum, Azotobacter, and Bacillus was applied to rhizosphere, fixation of atmospheric nitrogen increased. This was due to the activity of
FirstRanker.com - FirstRanker's Choice
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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17)
18)
19)
20)
Parsimony [Option ID = 20613]
A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the highest 25% of measurements and the highest
value of the lowest 25% of measurements is called the
[Question ID = 12642]
1. 50% confidence interval [Option ID = 20565]
2. Standard error [Option ID = 20567]
3. Standard deviation [Option ID = 20566]
4. Interquartile range [Option ID = 20568]
Correct Answer :-
50% confidence interval [Option ID = 20565]
Unidirectional flow of energy in an ecosystem is governed by the
[Question ID = 12672]
1. First Law of thermodynamics [Option ID = 20685]
2. None of these [Option ID = 20688]
3. Second Law of thermodynamics [Option ID = 20686]
4. Both first and second laws of thermodynamics [Option ID = 20687]
Correct Answer :-
First Law of thermodynamics [Option ID = 20685]
A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures because of the phenomenon of ??????...
[Question ID = 12636]
1. Niche divergence [Option ID = 20544]
2. Niche gradient [Option ID = 20542]
3. Niche complimentarity [Option ID = 20543]
4. Fundamental niche [Option ID = 20541]
Correct Answer :-
Fundamental niche [Option ID = 20541]
Hardness of minerals is measured in
[Question ID = 12674]
1. Clastic Scale [Option ID = 20695]
2. Talc Scale [Option ID = 20693]
3. Moh?s Scale [Option ID = 20694]
4. Beaufort?s Scale [Option ID = 20696]
Correct Answer :-
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21)
22)
23)
24)
25)
Talc Scale [Option ID = 20693]
Methemoglobinemia is caused due to pollution of
[Question ID = 12668]
1. Nitrate [Option ID = 20672]
2. Copper [Option ID = 20669]
3. Iron [Option ID = 20670]
4. Mercury [Option ID = 20671]
Correct Answer :-
Copper [Option ID = 20669]
What does the steep slope of a rank-abundance plot indicate? [Question ID = 12639]
1. greater abundance of dominant species in the community [Option ID = 20554]
2. greater abundance of rare species in the community [Option ID = 20555]
3. greater dominance of common species over rare species in the community [Option ID = 20556]
4. greater dominance of rare species over common species in the community [Option ID = 20553]
Correct Answer :-
greater dominance of rare species over common species in the community [Option ID = 20553]
An experiment that demonstrated the importance of spatial heterogeneity in stabilizing predator-prey interactions is called
[Question ID = 12650]
1. Allee?s experiment [Option ID = 20597]
2. Huffaker?s experiment [Option ID = 20598]
3. Organism interaction experiment [Option ID = 20600]
4. Ecosystem experiment [Option ID = 20599]
Correct Answer :-
Allee?s experiment [Option ID = 20597]
Walkley and Black?s Rapid Titration Method is used to estimate
[Question ID = 12649]
1. Soil phenolic levels [Option ID = 20594]
2. Soil organic carbon [Option ID = 20595]
3. Soil phosphate levels [Option ID = 20593]
4. Soil microbial activity [Option ID = 20596]
Correct Answer :-
Soil phosphate levels [Option ID = 20593]
When a mixture of Azospirillum, Azotobacter, and Bacillus was applied to rhizosphere, fixation of atmospheric nitrogen increased. This was due to the activity of
7/7/2019 192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions
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26)
27)
28)
29)
[Question ID = 12667]
1. Azospirillum and Bacillus [Option ID = 20666]
2. Azotobacter and Azospirillum [Option ID = 20668]
3. Azotobacter and Bacillus [Option ID = 20667]
4. Bacillus [Option ID = 20665]
Correct Answer :-
Bacillus [Option ID = 20665]
When a doctor uses a stethoscope to count your pulse rate, the doctor is gathering information by using the__________:
[Question ID = 12644]
1. empirical method [Option ID = 20574]
2. rational method [Option ID = 20573]
3. method of authority [Option ID = 20576]
4. method of intuition [Option ID = 20575]
Correct Answer :-
rational method [Option ID = 20573]
When noxious or dangerous animals advertize the fact by bright, conspicuous colors and patterns this is known as
[Question ID = 12647]
1. Allelopathy [Option ID = 20588]
2. Aposematism [Option ID = 20585]
3. Mimicry [Option ID = 20587]
4. Crypsis [Option ID = 20586]
Correct Answer :-
Aposematism [Option ID = 20585]
Long distance mate attraction in the insect order Orthoptera primarily involves
[Question ID = 12641]
1. Visual cues [Option ID = 20564]
2. Tremulation [Option ID = 20562]
3. Pheromones [Option ID = 20563]
4. Acoustic signals [Option ID = 20561]
Correct Answer :-
Acoustic signals [Option ID = 20561]
"Complete competitors cannot coexist" is true for
[Question ID = 12632]
FirstRanker.com - FirstRanker's Choice
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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17)
18)
19)
20)
Parsimony [Option ID = 20613]
A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the highest 25% of measurements and the highest
value of the lowest 25% of measurements is called the
[Question ID = 12642]
1. 50% confidence interval [Option ID = 20565]
2. Standard error [Option ID = 20567]
3. Standard deviation [Option ID = 20566]
4. Interquartile range [Option ID = 20568]
Correct Answer :-
50% confidence interval [Option ID = 20565]
Unidirectional flow of energy in an ecosystem is governed by the
[Question ID = 12672]
1. First Law of thermodynamics [Option ID = 20685]
2. None of these [Option ID = 20688]
3. Second Law of thermodynamics [Option ID = 20686]
4. Both first and second laws of thermodynamics [Option ID = 20687]
Correct Answer :-
First Law of thermodynamics [Option ID = 20685]
A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures because of the phenomenon of ??????...
[Question ID = 12636]
1. Niche divergence [Option ID = 20544]
2. Niche gradient [Option ID = 20542]
3. Niche complimentarity [Option ID = 20543]
4. Fundamental niche [Option ID = 20541]
Correct Answer :-
Fundamental niche [Option ID = 20541]
Hardness of minerals is measured in
[Question ID = 12674]
1. Clastic Scale [Option ID = 20695]
2. Talc Scale [Option ID = 20693]
3. Moh?s Scale [Option ID = 20694]
4. Beaufort?s Scale [Option ID = 20696]
Correct Answer :-
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21)
22)
23)
24)
25)
Talc Scale [Option ID = 20693]
Methemoglobinemia is caused due to pollution of
[Question ID = 12668]
1. Nitrate [Option ID = 20672]
2. Copper [Option ID = 20669]
3. Iron [Option ID = 20670]
4. Mercury [Option ID = 20671]
Correct Answer :-
Copper [Option ID = 20669]
What does the steep slope of a rank-abundance plot indicate? [Question ID = 12639]
1. greater abundance of dominant species in the community [Option ID = 20554]
2. greater abundance of rare species in the community [Option ID = 20555]
3. greater dominance of common species over rare species in the community [Option ID = 20556]
4. greater dominance of rare species over common species in the community [Option ID = 20553]
Correct Answer :-
greater dominance of rare species over common species in the community [Option ID = 20553]
An experiment that demonstrated the importance of spatial heterogeneity in stabilizing predator-prey interactions is called
[Question ID = 12650]
1. Allee?s experiment [Option ID = 20597]
2. Huffaker?s experiment [Option ID = 20598]
3. Organism interaction experiment [Option ID = 20600]
4. Ecosystem experiment [Option ID = 20599]
Correct Answer :-
Allee?s experiment [Option ID = 20597]
Walkley and Black?s Rapid Titration Method is used to estimate
[Question ID = 12649]
1. Soil phenolic levels [Option ID = 20594]
2. Soil organic carbon [Option ID = 20595]
3. Soil phosphate levels [Option ID = 20593]
4. Soil microbial activity [Option ID = 20596]
Correct Answer :-
Soil phosphate levels [Option ID = 20593]
When a mixture of Azospirillum, Azotobacter, and Bacillus was applied to rhizosphere, fixation of atmospheric nitrogen increased. This was due to the activity of
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26)
27)
28)
29)
[Question ID = 12667]
1. Azospirillum and Bacillus [Option ID = 20666]
2. Azotobacter and Azospirillum [Option ID = 20668]
3. Azotobacter and Bacillus [Option ID = 20667]
4. Bacillus [Option ID = 20665]
Correct Answer :-
Bacillus [Option ID = 20665]
When a doctor uses a stethoscope to count your pulse rate, the doctor is gathering information by using the__________:
[Question ID = 12644]
1. empirical method [Option ID = 20574]
2. rational method [Option ID = 20573]
3. method of authority [Option ID = 20576]
4. method of intuition [Option ID = 20575]
Correct Answer :-
rational method [Option ID = 20573]
When noxious or dangerous animals advertize the fact by bright, conspicuous colors and patterns this is known as
[Question ID = 12647]
1. Allelopathy [Option ID = 20588]
2. Aposematism [Option ID = 20585]
3. Mimicry [Option ID = 20587]
4. Crypsis [Option ID = 20586]
Correct Answer :-
Aposematism [Option ID = 20585]
Long distance mate attraction in the insect order Orthoptera primarily involves
[Question ID = 12641]
1. Visual cues [Option ID = 20564]
2. Tremulation [Option ID = 20562]
3. Pheromones [Option ID = 20563]
4. Acoustic signals [Option ID = 20561]
Correct Answer :-
Acoustic signals [Option ID = 20561]
"Complete competitors cannot coexist" is true for
[Question ID = 12632]
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30)
31)
32)
33)
1. Primary succession [Option ID = 20525]
2. Character displacement [Option ID = 20528]
3. Secondary succession [Option ID = 20526]
4. Competitive exclusion [Option ID = 20527]
Correct Answer :-
Primary succession [Option ID = 20525]
A plateau phase in growth curve of a population signifies ___________.
[Question ID = 12656]
1. Population with an equal number of births and deaths [Option ID = 20622]
2. Population with higher deaths than the births [Option ID = 20623]
3. Population with zero births and high deaths [Option ID = 20624]
4. Population with rapidly growing individuals [Option ID = 20621]
Correct Answer :-
Population with rapidly growing individuals [Option ID = 20621]
?Naturalization-invasion continuum? which conceptualizes the various barriers that a plant must overcome to become alien, casual, naturalized, or invasive in a new environment was proposed by
[Question ID = 12627]
1. Lambers and Poorter, 1999 [Option ID = 20507]
2. Zhou, 2013 [Option ID = 20508]
3. Richardson and Py?ek, 2006 [Option ID = 20505]
4. Simberloff et al. , 2012 [Option ID = 20506]
Correct Answer :-
Richardson and Py?ek, 2006 [Option ID = 20505]
According to the ?Aichi Biodiversity Targets? which strategic goal and target is pertinent to invasive alien species? [Question ID = 12628]
1. Goal A and Target 3 [Option ID = 20509]
2. Goal B and Target 9 [Option ID = 20510]
3. Goal C and Target 13 [Option ID = 20511]
4. Goal D and Target 16 [Option ID = 20512]
Correct Answer :-
Goal A and Target 3 [Option ID = 20509]
Peptide bonds of which one of the following is not synthesized by ribosomes?
[Question ID = 12663]
1. Phytochelatins [Option ID = 20652]
2. Cytochrome C [Option ID = 20651]
3. Alkaline phosphatase [Option ID = 20650]
4. Salivary amylase [Option ID = 20649]
FirstRanker.com - FirstRanker's Choice
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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17)
18)
19)
20)
Parsimony [Option ID = 20613]
A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the highest 25% of measurements and the highest
value of the lowest 25% of measurements is called the
[Question ID = 12642]
1. 50% confidence interval [Option ID = 20565]
2. Standard error [Option ID = 20567]
3. Standard deviation [Option ID = 20566]
4. Interquartile range [Option ID = 20568]
Correct Answer :-
50% confidence interval [Option ID = 20565]
Unidirectional flow of energy in an ecosystem is governed by the
[Question ID = 12672]
1. First Law of thermodynamics [Option ID = 20685]
2. None of these [Option ID = 20688]
3. Second Law of thermodynamics [Option ID = 20686]
4. Both first and second laws of thermodynamics [Option ID = 20687]
Correct Answer :-
First Law of thermodynamics [Option ID = 20685]
A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures because of the phenomenon of ??????...
[Question ID = 12636]
1. Niche divergence [Option ID = 20544]
2. Niche gradient [Option ID = 20542]
3. Niche complimentarity [Option ID = 20543]
4. Fundamental niche [Option ID = 20541]
Correct Answer :-
Fundamental niche [Option ID = 20541]
Hardness of minerals is measured in
[Question ID = 12674]
1. Clastic Scale [Option ID = 20695]
2. Talc Scale [Option ID = 20693]
3. Moh?s Scale [Option ID = 20694]
4. Beaufort?s Scale [Option ID = 20696]
Correct Answer :-
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21)
22)
23)
24)
25)
Talc Scale [Option ID = 20693]
Methemoglobinemia is caused due to pollution of
[Question ID = 12668]
1. Nitrate [Option ID = 20672]
2. Copper [Option ID = 20669]
3. Iron [Option ID = 20670]
4. Mercury [Option ID = 20671]
Correct Answer :-
Copper [Option ID = 20669]
What does the steep slope of a rank-abundance plot indicate? [Question ID = 12639]
1. greater abundance of dominant species in the community [Option ID = 20554]
2. greater abundance of rare species in the community [Option ID = 20555]
3. greater dominance of common species over rare species in the community [Option ID = 20556]
4. greater dominance of rare species over common species in the community [Option ID = 20553]
Correct Answer :-
greater dominance of rare species over common species in the community [Option ID = 20553]
An experiment that demonstrated the importance of spatial heterogeneity in stabilizing predator-prey interactions is called
[Question ID = 12650]
1. Allee?s experiment [Option ID = 20597]
2. Huffaker?s experiment [Option ID = 20598]
3. Organism interaction experiment [Option ID = 20600]
4. Ecosystem experiment [Option ID = 20599]
Correct Answer :-
Allee?s experiment [Option ID = 20597]
Walkley and Black?s Rapid Titration Method is used to estimate
[Question ID = 12649]
1. Soil phenolic levels [Option ID = 20594]
2. Soil organic carbon [Option ID = 20595]
3. Soil phosphate levels [Option ID = 20593]
4. Soil microbial activity [Option ID = 20596]
Correct Answer :-
Soil phosphate levels [Option ID = 20593]
When a mixture of Azospirillum, Azotobacter, and Bacillus was applied to rhizosphere, fixation of atmospheric nitrogen increased. This was due to the activity of
7/7/2019 192.168.183.10:8195/GameChanger/Reports/PapersetQuestion/PapersetQuestions
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26)
27)
28)
29)
[Question ID = 12667]
1. Azospirillum and Bacillus [Option ID = 20666]
2. Azotobacter and Azospirillum [Option ID = 20668]
3. Azotobacter and Bacillus [Option ID = 20667]
4. Bacillus [Option ID = 20665]
Correct Answer :-
Bacillus [Option ID = 20665]
When a doctor uses a stethoscope to count your pulse rate, the doctor is gathering information by using the__________:
[Question ID = 12644]
1. empirical method [Option ID = 20574]
2. rational method [Option ID = 20573]
3. method of authority [Option ID = 20576]
4. method of intuition [Option ID = 20575]
Correct Answer :-
rational method [Option ID = 20573]
When noxious or dangerous animals advertize the fact by bright, conspicuous colors and patterns this is known as
[Question ID = 12647]
1. Allelopathy [Option ID = 20588]
2. Aposematism [Option ID = 20585]
3. Mimicry [Option ID = 20587]
4. Crypsis [Option ID = 20586]
Correct Answer :-
Aposematism [Option ID = 20585]
Long distance mate attraction in the insect order Orthoptera primarily involves
[Question ID = 12641]
1. Visual cues [Option ID = 20564]
2. Tremulation [Option ID = 20562]
3. Pheromones [Option ID = 20563]
4. Acoustic signals [Option ID = 20561]
Correct Answer :-
Acoustic signals [Option ID = 20561]
"Complete competitors cannot coexist" is true for
[Question ID = 12632]
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30)
31)
32)
33)
1. Primary succession [Option ID = 20525]
2. Character displacement [Option ID = 20528]
3. Secondary succession [Option ID = 20526]
4. Competitive exclusion [Option ID = 20527]
Correct Answer :-
Primary succession [Option ID = 20525]
A plateau phase in growth curve of a population signifies ___________.
[Question ID = 12656]
1. Population with an equal number of births and deaths [Option ID = 20622]
2. Population with higher deaths than the births [Option ID = 20623]
3. Population with zero births and high deaths [Option ID = 20624]
4. Population with rapidly growing individuals [Option ID = 20621]
Correct Answer :-
Population with rapidly growing individuals [Option ID = 20621]
?Naturalization-invasion continuum? which conceptualizes the various barriers that a plant must overcome to become alien, casual, naturalized, or invasive in a new environment was proposed by
[Question ID = 12627]
1. Lambers and Poorter, 1999 [Option ID = 20507]
2. Zhou, 2013 [Option ID = 20508]
3. Richardson and Py?ek, 2006 [Option ID = 20505]
4. Simberloff et al. , 2012 [Option ID = 20506]
Correct Answer :-
Richardson and Py?ek, 2006 [Option ID = 20505]
According to the ?Aichi Biodiversity Targets? which strategic goal and target is pertinent to invasive alien species? [Question ID = 12628]
1. Goal A and Target 3 [Option ID = 20509]
2. Goal B and Target 9 [Option ID = 20510]
3. Goal C and Target 13 [Option ID = 20511]
4. Goal D and Target 16 [Option ID = 20512]
Correct Answer :-
Goal A and Target 3 [Option ID = 20509]
Peptide bonds of which one of the following is not synthesized by ribosomes?
[Question ID = 12663]
1. Phytochelatins [Option ID = 20652]
2. Cytochrome C [Option ID = 20651]
3. Alkaline phosphatase [Option ID = 20650]
4. Salivary amylase [Option ID = 20649]
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34)
35)
36)
37)
Correct Answer :-
Salivary amylase [Option ID = 20649]
Percentage of soil organic matter represented by carbon is
[Question ID = 12669]
1. 72% [Option ID = 20676]
2. 14% [Option ID = 20673]
3. 28% [Option ID = 20674]
4. 58% [Option ID = 20675]
Correct Answer :-
14% [Option ID = 20673]
?Program MARK? is a popular software used to analyze a variety of ecological data pertaining to breeding success, population size, etc. The underlying concept of this program is based on
[Question ID = 12676]
1. Base pair deletions [Option ID = 20703]
2. r and K selection [Option ID = 20704]
3. Lock and key mechanism [Option ID = 20701]
4. Mark-recapture [Option ID = 20702]
Correct Answer :-
Lock and key mechanism [Option ID = 20701]
Who among the following is considered to be the foremost expert on chimpanzees?
[Question ID = 12662]
1. Ernst Mayr [Option ID = 20647]
2. Steve Irwin [Option ID = 20646]
3. Neil Shubin [Option ID = 20648]
4. Jane Goodall [Option ID = 20645]
Correct Answer :-
Jane Goodall [Option ID = 20645]
Closely related species present in the same habitat are likely to experience
[Question ID = 12657]
1. Severe competition [Option ID = 20625]
2. No competition [Option ID = 20627]
3. High cooperation [Option ID = 20628]
4. Low competition [Option ID = 20626]
Correct Answer :-
FirstRanker.com - FirstRanker's Choice
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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17)
18)
19)
20)
Parsimony [Option ID = 20613]
A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the highest 25% of measurements and the highest
value of the lowest 25% of measurements is called the
[Question ID = 12642]
1. 50% confidence interval [Option ID = 20565]
2. Standard error [Option ID = 20567]
3. Standard deviation [Option ID = 20566]
4. Interquartile range [Option ID = 20568]
Correct Answer :-
50% confidence interval [Option ID = 20565]
Unidirectional flow of energy in an ecosystem is governed by the
[Question ID = 12672]
1. First Law of thermodynamics [Option ID = 20685]
2. None of these [Option ID = 20688]
3. Second Law of thermodynamics [Option ID = 20686]
4. Both first and second laws of thermodynamics [Option ID = 20687]
Correct Answer :-
First Law of thermodynamics [Option ID = 20685]
A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures because of the phenomenon of ??????...
[Question ID = 12636]
1. Niche divergence [Option ID = 20544]
2. Niche gradient [Option ID = 20542]
3. Niche complimentarity [Option ID = 20543]
4. Fundamental niche [Option ID = 20541]
Correct Answer :-
Fundamental niche [Option ID = 20541]
Hardness of minerals is measured in
[Question ID = 12674]
1. Clastic Scale [Option ID = 20695]
2. Talc Scale [Option ID = 20693]
3. Moh?s Scale [Option ID = 20694]
4. Beaufort?s Scale [Option ID = 20696]
Correct Answer :-
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21)
22)
23)
24)
25)
Talc Scale [Option ID = 20693]
Methemoglobinemia is caused due to pollution of
[Question ID = 12668]
1. Nitrate [Option ID = 20672]
2. Copper [Option ID = 20669]
3. Iron [Option ID = 20670]
4. Mercury [Option ID = 20671]
Correct Answer :-
Copper [Option ID = 20669]
What does the steep slope of a rank-abundance plot indicate? [Question ID = 12639]
1. greater abundance of dominant species in the community [Option ID = 20554]
2. greater abundance of rare species in the community [Option ID = 20555]
3. greater dominance of common species over rare species in the community [Option ID = 20556]
4. greater dominance of rare species over common species in the community [Option ID = 20553]
Correct Answer :-
greater dominance of rare species over common species in the community [Option ID = 20553]
An experiment that demonstrated the importance of spatial heterogeneity in stabilizing predator-prey interactions is called
[Question ID = 12650]
1. Allee?s experiment [Option ID = 20597]
2. Huffaker?s experiment [Option ID = 20598]
3. Organism interaction experiment [Option ID = 20600]
4. Ecosystem experiment [Option ID = 20599]
Correct Answer :-
Allee?s experiment [Option ID = 20597]
Walkley and Black?s Rapid Titration Method is used to estimate
[Question ID = 12649]
1. Soil phenolic levels [Option ID = 20594]
2. Soil organic carbon [Option ID = 20595]
3. Soil phosphate levels [Option ID = 20593]
4. Soil microbial activity [Option ID = 20596]
Correct Answer :-
Soil phosphate levels [Option ID = 20593]
When a mixture of Azospirillum, Azotobacter, and Bacillus was applied to rhizosphere, fixation of atmospheric nitrogen increased. This was due to the activity of
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26)
27)
28)
29)
[Question ID = 12667]
1. Azospirillum and Bacillus [Option ID = 20666]
2. Azotobacter and Azospirillum [Option ID = 20668]
3. Azotobacter and Bacillus [Option ID = 20667]
4. Bacillus [Option ID = 20665]
Correct Answer :-
Bacillus [Option ID = 20665]
When a doctor uses a stethoscope to count your pulse rate, the doctor is gathering information by using the__________:
[Question ID = 12644]
1. empirical method [Option ID = 20574]
2. rational method [Option ID = 20573]
3. method of authority [Option ID = 20576]
4. method of intuition [Option ID = 20575]
Correct Answer :-
rational method [Option ID = 20573]
When noxious or dangerous animals advertize the fact by bright, conspicuous colors and patterns this is known as
[Question ID = 12647]
1. Allelopathy [Option ID = 20588]
2. Aposematism [Option ID = 20585]
3. Mimicry [Option ID = 20587]
4. Crypsis [Option ID = 20586]
Correct Answer :-
Aposematism [Option ID = 20585]
Long distance mate attraction in the insect order Orthoptera primarily involves
[Question ID = 12641]
1. Visual cues [Option ID = 20564]
2. Tremulation [Option ID = 20562]
3. Pheromones [Option ID = 20563]
4. Acoustic signals [Option ID = 20561]
Correct Answer :-
Acoustic signals [Option ID = 20561]
"Complete competitors cannot coexist" is true for
[Question ID = 12632]
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30)
31)
32)
33)
1. Primary succession [Option ID = 20525]
2. Character displacement [Option ID = 20528]
3. Secondary succession [Option ID = 20526]
4. Competitive exclusion [Option ID = 20527]
Correct Answer :-
Primary succession [Option ID = 20525]
A plateau phase in growth curve of a population signifies ___________.
[Question ID = 12656]
1. Population with an equal number of births and deaths [Option ID = 20622]
2. Population with higher deaths than the births [Option ID = 20623]
3. Population with zero births and high deaths [Option ID = 20624]
4. Population with rapidly growing individuals [Option ID = 20621]
Correct Answer :-
Population with rapidly growing individuals [Option ID = 20621]
?Naturalization-invasion continuum? which conceptualizes the various barriers that a plant must overcome to become alien, casual, naturalized, or invasive in a new environment was proposed by
[Question ID = 12627]
1. Lambers and Poorter, 1999 [Option ID = 20507]
2. Zhou, 2013 [Option ID = 20508]
3. Richardson and Py?ek, 2006 [Option ID = 20505]
4. Simberloff et al. , 2012 [Option ID = 20506]
Correct Answer :-
Richardson and Py?ek, 2006 [Option ID = 20505]
According to the ?Aichi Biodiversity Targets? which strategic goal and target is pertinent to invasive alien species? [Question ID = 12628]
1. Goal A and Target 3 [Option ID = 20509]
2. Goal B and Target 9 [Option ID = 20510]
3. Goal C and Target 13 [Option ID = 20511]
4. Goal D and Target 16 [Option ID = 20512]
Correct Answer :-
Goal A and Target 3 [Option ID = 20509]
Peptide bonds of which one of the following is not synthesized by ribosomes?
[Question ID = 12663]
1. Phytochelatins [Option ID = 20652]
2. Cytochrome C [Option ID = 20651]
3. Alkaline phosphatase [Option ID = 20650]
4. Salivary amylase [Option ID = 20649]
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34)
35)
36)
37)
Correct Answer :-
Salivary amylase [Option ID = 20649]
Percentage of soil organic matter represented by carbon is
[Question ID = 12669]
1. 72% [Option ID = 20676]
2. 14% [Option ID = 20673]
3. 28% [Option ID = 20674]
4. 58% [Option ID = 20675]
Correct Answer :-
14% [Option ID = 20673]
?Program MARK? is a popular software used to analyze a variety of ecological data pertaining to breeding success, population size, etc. The underlying concept of this program is based on
[Question ID = 12676]
1. Base pair deletions [Option ID = 20703]
2. r and K selection [Option ID = 20704]
3. Lock and key mechanism [Option ID = 20701]
4. Mark-recapture [Option ID = 20702]
Correct Answer :-
Lock and key mechanism [Option ID = 20701]
Who among the following is considered to be the foremost expert on chimpanzees?
[Question ID = 12662]
1. Ernst Mayr [Option ID = 20647]
2. Steve Irwin [Option ID = 20646]
3. Neil Shubin [Option ID = 20648]
4. Jane Goodall [Option ID = 20645]
Correct Answer :-
Jane Goodall [Option ID = 20645]
Closely related species present in the same habitat are likely to experience
[Question ID = 12657]
1. Severe competition [Option ID = 20625]
2. No competition [Option ID = 20627]
3. High cooperation [Option ID = 20628]
4. Low competition [Option ID = 20626]
Correct Answer :-
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38)
39)
40)
41)
Severe competition [Option ID = 20625]
Species are put into groups and then groups are arranged into hierarchies to form a tree like arrangement called dendrogram for the hierarchical classification of vegetation. This is best done
through
[Question ID = 12629]
1. Correlation analysis [Option ID = 20515]
2. Regression analysis [Option ID = 20513]
3. Twinspan analysis [Option ID = 20514]
4. Principle component analysis [Option ID = 20516]
Correct Answer :-
Regression analysis [Option ID = 20513]
Null hypothesis and alternative hypothesis are often symbolized by ____ and _____, respectively.
[Question ID = 12655]
1. H1, H0 [Option ID = 20618]
2. H0, H1 [Option ID = 20617]
3. H0a, H0b [Option ID = 20620]
4. H1a, H1b [Option ID = 20619]
Correct Answer :-
H0, H1 [Option ID = 20617]
Which of the following two areas would have greater species diversity?
Area 1: Species A- 10; Species B- 10; Species C- 10
Area 2:Species A- 1; Species B- 1; Species C- 28 [Question ID = 12638]
1. Area 1 and Area 2 have equal diversity [Option ID = 20551]
2. Area 1 and Area 2 have equal species evenness [Option ID = 20552]
3. Area 1 [Option ID = 20549]
4. Area 2 [Option ID = 20550]
Correct Answer :-
Area 1 [Option ID = 20549]
?????????is a measure of area of biologically productive land or sea required to produce food, material, and energy. [Question ID = 12631]
1. Living Planet Index (LPI) [Option ID = 20522]
2. Ecological Foot Print (EF) [Option ID = 20521]
3. Human Development Index (HDI) [Option ID = 20523]
4. Happy Planet Index (HPI) [Option ID = 20524]
Correct Answer :-
Ecological Foot Print (EF) [Option ID = 20521]
FirstRanker.com - FirstRanker's Choice
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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17)
18)
19)
20)
Parsimony [Option ID = 20613]
A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the highest 25% of measurements and the highest
value of the lowest 25% of measurements is called the
[Question ID = 12642]
1. 50% confidence interval [Option ID = 20565]
2. Standard error [Option ID = 20567]
3. Standard deviation [Option ID = 20566]
4. Interquartile range [Option ID = 20568]
Correct Answer :-
50% confidence interval [Option ID = 20565]
Unidirectional flow of energy in an ecosystem is governed by the
[Question ID = 12672]
1. First Law of thermodynamics [Option ID = 20685]
2. None of these [Option ID = 20688]
3. Second Law of thermodynamics [Option ID = 20686]
4. Both first and second laws of thermodynamics [Option ID = 20687]
Correct Answer :-
First Law of thermodynamics [Option ID = 20685]
A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures because of the phenomenon of ??????...
[Question ID = 12636]
1. Niche divergence [Option ID = 20544]
2. Niche gradient [Option ID = 20542]
3. Niche complimentarity [Option ID = 20543]
4. Fundamental niche [Option ID = 20541]
Correct Answer :-
Fundamental niche [Option ID = 20541]
Hardness of minerals is measured in
[Question ID = 12674]
1. Clastic Scale [Option ID = 20695]
2. Talc Scale [Option ID = 20693]
3. Moh?s Scale [Option ID = 20694]
4. Beaufort?s Scale [Option ID = 20696]
Correct Answer :-
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21)
22)
23)
24)
25)
Talc Scale [Option ID = 20693]
Methemoglobinemia is caused due to pollution of
[Question ID = 12668]
1. Nitrate [Option ID = 20672]
2. Copper [Option ID = 20669]
3. Iron [Option ID = 20670]
4. Mercury [Option ID = 20671]
Correct Answer :-
Copper [Option ID = 20669]
What does the steep slope of a rank-abundance plot indicate? [Question ID = 12639]
1. greater abundance of dominant species in the community [Option ID = 20554]
2. greater abundance of rare species in the community [Option ID = 20555]
3. greater dominance of common species over rare species in the community [Option ID = 20556]
4. greater dominance of rare species over common species in the community [Option ID = 20553]
Correct Answer :-
greater dominance of rare species over common species in the community [Option ID = 20553]
An experiment that demonstrated the importance of spatial heterogeneity in stabilizing predator-prey interactions is called
[Question ID = 12650]
1. Allee?s experiment [Option ID = 20597]
2. Huffaker?s experiment [Option ID = 20598]
3. Organism interaction experiment [Option ID = 20600]
4. Ecosystem experiment [Option ID = 20599]
Correct Answer :-
Allee?s experiment [Option ID = 20597]
Walkley and Black?s Rapid Titration Method is used to estimate
[Question ID = 12649]
1. Soil phenolic levels [Option ID = 20594]
2. Soil organic carbon [Option ID = 20595]
3. Soil phosphate levels [Option ID = 20593]
4. Soil microbial activity [Option ID = 20596]
Correct Answer :-
Soil phosphate levels [Option ID = 20593]
When a mixture of Azospirillum, Azotobacter, and Bacillus was applied to rhizosphere, fixation of atmospheric nitrogen increased. This was due to the activity of
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26)
27)
28)
29)
[Question ID = 12667]
1. Azospirillum and Bacillus [Option ID = 20666]
2. Azotobacter and Azospirillum [Option ID = 20668]
3. Azotobacter and Bacillus [Option ID = 20667]
4. Bacillus [Option ID = 20665]
Correct Answer :-
Bacillus [Option ID = 20665]
When a doctor uses a stethoscope to count your pulse rate, the doctor is gathering information by using the__________:
[Question ID = 12644]
1. empirical method [Option ID = 20574]
2. rational method [Option ID = 20573]
3. method of authority [Option ID = 20576]
4. method of intuition [Option ID = 20575]
Correct Answer :-
rational method [Option ID = 20573]
When noxious or dangerous animals advertize the fact by bright, conspicuous colors and patterns this is known as
[Question ID = 12647]
1. Allelopathy [Option ID = 20588]
2. Aposematism [Option ID = 20585]
3. Mimicry [Option ID = 20587]
4. Crypsis [Option ID = 20586]
Correct Answer :-
Aposematism [Option ID = 20585]
Long distance mate attraction in the insect order Orthoptera primarily involves
[Question ID = 12641]
1. Visual cues [Option ID = 20564]
2. Tremulation [Option ID = 20562]
3. Pheromones [Option ID = 20563]
4. Acoustic signals [Option ID = 20561]
Correct Answer :-
Acoustic signals [Option ID = 20561]
"Complete competitors cannot coexist" is true for
[Question ID = 12632]
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30)
31)
32)
33)
1. Primary succession [Option ID = 20525]
2. Character displacement [Option ID = 20528]
3. Secondary succession [Option ID = 20526]
4. Competitive exclusion [Option ID = 20527]
Correct Answer :-
Primary succession [Option ID = 20525]
A plateau phase in growth curve of a population signifies ___________.
[Question ID = 12656]
1. Population with an equal number of births and deaths [Option ID = 20622]
2. Population with higher deaths than the births [Option ID = 20623]
3. Population with zero births and high deaths [Option ID = 20624]
4. Population with rapidly growing individuals [Option ID = 20621]
Correct Answer :-
Population with rapidly growing individuals [Option ID = 20621]
?Naturalization-invasion continuum? which conceptualizes the various barriers that a plant must overcome to become alien, casual, naturalized, or invasive in a new environment was proposed by
[Question ID = 12627]
1. Lambers and Poorter, 1999 [Option ID = 20507]
2. Zhou, 2013 [Option ID = 20508]
3. Richardson and Py?ek, 2006 [Option ID = 20505]
4. Simberloff et al. , 2012 [Option ID = 20506]
Correct Answer :-
Richardson and Py?ek, 2006 [Option ID = 20505]
According to the ?Aichi Biodiversity Targets? which strategic goal and target is pertinent to invasive alien species? [Question ID = 12628]
1. Goal A and Target 3 [Option ID = 20509]
2. Goal B and Target 9 [Option ID = 20510]
3. Goal C and Target 13 [Option ID = 20511]
4. Goal D and Target 16 [Option ID = 20512]
Correct Answer :-
Goal A and Target 3 [Option ID = 20509]
Peptide bonds of which one of the following is not synthesized by ribosomes?
[Question ID = 12663]
1. Phytochelatins [Option ID = 20652]
2. Cytochrome C [Option ID = 20651]
3. Alkaline phosphatase [Option ID = 20650]
4. Salivary amylase [Option ID = 20649]
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34)
35)
36)
37)
Correct Answer :-
Salivary amylase [Option ID = 20649]
Percentage of soil organic matter represented by carbon is
[Question ID = 12669]
1. 72% [Option ID = 20676]
2. 14% [Option ID = 20673]
3. 28% [Option ID = 20674]
4. 58% [Option ID = 20675]
Correct Answer :-
14% [Option ID = 20673]
?Program MARK? is a popular software used to analyze a variety of ecological data pertaining to breeding success, population size, etc. The underlying concept of this program is based on
[Question ID = 12676]
1. Base pair deletions [Option ID = 20703]
2. r and K selection [Option ID = 20704]
3. Lock and key mechanism [Option ID = 20701]
4. Mark-recapture [Option ID = 20702]
Correct Answer :-
Lock and key mechanism [Option ID = 20701]
Who among the following is considered to be the foremost expert on chimpanzees?
[Question ID = 12662]
1. Ernst Mayr [Option ID = 20647]
2. Steve Irwin [Option ID = 20646]
3. Neil Shubin [Option ID = 20648]
4. Jane Goodall [Option ID = 20645]
Correct Answer :-
Jane Goodall [Option ID = 20645]
Closely related species present in the same habitat are likely to experience
[Question ID = 12657]
1. Severe competition [Option ID = 20625]
2. No competition [Option ID = 20627]
3. High cooperation [Option ID = 20628]
4. Low competition [Option ID = 20626]
Correct Answer :-
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38)
39)
40)
41)
Severe competition [Option ID = 20625]
Species are put into groups and then groups are arranged into hierarchies to form a tree like arrangement called dendrogram for the hierarchical classification of vegetation. This is best done
through
[Question ID = 12629]
1. Correlation analysis [Option ID = 20515]
2. Regression analysis [Option ID = 20513]
3. Twinspan analysis [Option ID = 20514]
4. Principle component analysis [Option ID = 20516]
Correct Answer :-
Regression analysis [Option ID = 20513]
Null hypothesis and alternative hypothesis are often symbolized by ____ and _____, respectively.
[Question ID = 12655]
1. H1, H0 [Option ID = 20618]
2. H0, H1 [Option ID = 20617]
3. H0a, H0b [Option ID = 20620]
4. H1a, H1b [Option ID = 20619]
Correct Answer :-
H0, H1 [Option ID = 20617]
Which of the following two areas would have greater species diversity?
Area 1: Species A- 10; Species B- 10; Species C- 10
Area 2:Species A- 1; Species B- 1; Species C- 28 [Question ID = 12638]
1. Area 1 and Area 2 have equal diversity [Option ID = 20551]
2. Area 1 and Area 2 have equal species evenness [Option ID = 20552]
3. Area 1 [Option ID = 20549]
4. Area 2 [Option ID = 20550]
Correct Answer :-
Area 1 [Option ID = 20549]
?????????is a measure of area of biologically productive land or sea required to produce food, material, and energy. [Question ID = 12631]
1. Living Planet Index (LPI) [Option ID = 20522]
2. Ecological Foot Print (EF) [Option ID = 20521]
3. Human Development Index (HDI) [Option ID = 20523]
4. Happy Planet Index (HPI) [Option ID = 20524]
Correct Answer :-
Ecological Foot Print (EF) [Option ID = 20521]
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42)
43)
44)
45)
46)
Interplanar spacing used in XRD analysis is calculated using
[Question ID = 12665]
1. First law of Thermodynamics [Option ID = 20657]
2. Second law of Thermodynamics [Option ID = 20658]
3. Brag?s law [Option ID = 20659]
4. Newton?s first law [Option ID = 20660]
Correct Answer :-
First law of Thermodynamics [Option ID = 20657]
Which one of the following is referred to as nature?s pesticide? [Question ID = 12666]
1. Heptachlor [Option ID = 20662]
2. Toxaphene [Option ID = 20663]
3. Aldrin [Option ID = 20661]
4. Pyrethrum [Option ID = 20664]
Correct Answer :-
Aldrin [Option ID = 20661]
Physiognomy is a????????? qualitative analytical character of a community.
[Question ID = 12633]
1. Synthetic [Option ID = 20531]
2. Species level [Option ID = 20530]
3. Stand level [Option ID = 20529]
4. Stand and species level [Option ID = 20532]
Correct Answer :-
Stand level [Option ID = 20529]
Geostrophic wind occurs when pressure gradient force balances
[Question ID = 12670]
1. Centripetal force [Option ID = 20679]
2. Coriolis force [Option ID = 20677]
3. Frictional force [Option ID = 20678]
4. None of these [Option ID = 20680]
Correct Answer :-
Coriolis force [Option ID = 20677]
Presenting someone else?s ideas or work without their consent or without acknowledgement is
[Question ID = 12661]
1. An act of plagiarism [Option ID = 20643]
FirstRanker.com - FirstRanker's Choice
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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17)
18)
19)
20)
Parsimony [Option ID = 20613]
A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the highest 25% of measurements and the highest
value of the lowest 25% of measurements is called the
[Question ID = 12642]
1. 50% confidence interval [Option ID = 20565]
2. Standard error [Option ID = 20567]
3. Standard deviation [Option ID = 20566]
4. Interquartile range [Option ID = 20568]
Correct Answer :-
50% confidence interval [Option ID = 20565]
Unidirectional flow of energy in an ecosystem is governed by the
[Question ID = 12672]
1. First Law of thermodynamics [Option ID = 20685]
2. None of these [Option ID = 20688]
3. Second Law of thermodynamics [Option ID = 20686]
4. Both first and second laws of thermodynamics [Option ID = 20687]
Correct Answer :-
First Law of thermodynamics [Option ID = 20685]
A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures because of the phenomenon of ??????...
[Question ID = 12636]
1. Niche divergence [Option ID = 20544]
2. Niche gradient [Option ID = 20542]
3. Niche complimentarity [Option ID = 20543]
4. Fundamental niche [Option ID = 20541]
Correct Answer :-
Fundamental niche [Option ID = 20541]
Hardness of minerals is measured in
[Question ID = 12674]
1. Clastic Scale [Option ID = 20695]
2. Talc Scale [Option ID = 20693]
3. Moh?s Scale [Option ID = 20694]
4. Beaufort?s Scale [Option ID = 20696]
Correct Answer :-
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21)
22)
23)
24)
25)
Talc Scale [Option ID = 20693]
Methemoglobinemia is caused due to pollution of
[Question ID = 12668]
1. Nitrate [Option ID = 20672]
2. Copper [Option ID = 20669]
3. Iron [Option ID = 20670]
4. Mercury [Option ID = 20671]
Correct Answer :-
Copper [Option ID = 20669]
What does the steep slope of a rank-abundance plot indicate? [Question ID = 12639]
1. greater abundance of dominant species in the community [Option ID = 20554]
2. greater abundance of rare species in the community [Option ID = 20555]
3. greater dominance of common species over rare species in the community [Option ID = 20556]
4. greater dominance of rare species over common species in the community [Option ID = 20553]
Correct Answer :-
greater dominance of rare species over common species in the community [Option ID = 20553]
An experiment that demonstrated the importance of spatial heterogeneity in stabilizing predator-prey interactions is called
[Question ID = 12650]
1. Allee?s experiment [Option ID = 20597]
2. Huffaker?s experiment [Option ID = 20598]
3. Organism interaction experiment [Option ID = 20600]
4. Ecosystem experiment [Option ID = 20599]
Correct Answer :-
Allee?s experiment [Option ID = 20597]
Walkley and Black?s Rapid Titration Method is used to estimate
[Question ID = 12649]
1. Soil phenolic levels [Option ID = 20594]
2. Soil organic carbon [Option ID = 20595]
3. Soil phosphate levels [Option ID = 20593]
4. Soil microbial activity [Option ID = 20596]
Correct Answer :-
Soil phosphate levels [Option ID = 20593]
When a mixture of Azospirillum, Azotobacter, and Bacillus was applied to rhizosphere, fixation of atmospheric nitrogen increased. This was due to the activity of
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26)
27)
28)
29)
[Question ID = 12667]
1. Azospirillum and Bacillus [Option ID = 20666]
2. Azotobacter and Azospirillum [Option ID = 20668]
3. Azotobacter and Bacillus [Option ID = 20667]
4. Bacillus [Option ID = 20665]
Correct Answer :-
Bacillus [Option ID = 20665]
When a doctor uses a stethoscope to count your pulse rate, the doctor is gathering information by using the__________:
[Question ID = 12644]
1. empirical method [Option ID = 20574]
2. rational method [Option ID = 20573]
3. method of authority [Option ID = 20576]
4. method of intuition [Option ID = 20575]
Correct Answer :-
rational method [Option ID = 20573]
When noxious or dangerous animals advertize the fact by bright, conspicuous colors and patterns this is known as
[Question ID = 12647]
1. Allelopathy [Option ID = 20588]
2. Aposematism [Option ID = 20585]
3. Mimicry [Option ID = 20587]
4. Crypsis [Option ID = 20586]
Correct Answer :-
Aposematism [Option ID = 20585]
Long distance mate attraction in the insect order Orthoptera primarily involves
[Question ID = 12641]
1. Visual cues [Option ID = 20564]
2. Tremulation [Option ID = 20562]
3. Pheromones [Option ID = 20563]
4. Acoustic signals [Option ID = 20561]
Correct Answer :-
Acoustic signals [Option ID = 20561]
"Complete competitors cannot coexist" is true for
[Question ID = 12632]
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30)
31)
32)
33)
1. Primary succession [Option ID = 20525]
2. Character displacement [Option ID = 20528]
3. Secondary succession [Option ID = 20526]
4. Competitive exclusion [Option ID = 20527]
Correct Answer :-
Primary succession [Option ID = 20525]
A plateau phase in growth curve of a population signifies ___________.
[Question ID = 12656]
1. Population with an equal number of births and deaths [Option ID = 20622]
2. Population with higher deaths than the births [Option ID = 20623]
3. Population with zero births and high deaths [Option ID = 20624]
4. Population with rapidly growing individuals [Option ID = 20621]
Correct Answer :-
Population with rapidly growing individuals [Option ID = 20621]
?Naturalization-invasion continuum? which conceptualizes the various barriers that a plant must overcome to become alien, casual, naturalized, or invasive in a new environment was proposed by
[Question ID = 12627]
1. Lambers and Poorter, 1999 [Option ID = 20507]
2. Zhou, 2013 [Option ID = 20508]
3. Richardson and Py?ek, 2006 [Option ID = 20505]
4. Simberloff et al. , 2012 [Option ID = 20506]
Correct Answer :-
Richardson and Py?ek, 2006 [Option ID = 20505]
According to the ?Aichi Biodiversity Targets? which strategic goal and target is pertinent to invasive alien species? [Question ID = 12628]
1. Goal A and Target 3 [Option ID = 20509]
2. Goal B and Target 9 [Option ID = 20510]
3. Goal C and Target 13 [Option ID = 20511]
4. Goal D and Target 16 [Option ID = 20512]
Correct Answer :-
Goal A and Target 3 [Option ID = 20509]
Peptide bonds of which one of the following is not synthesized by ribosomes?
[Question ID = 12663]
1. Phytochelatins [Option ID = 20652]
2. Cytochrome C [Option ID = 20651]
3. Alkaline phosphatase [Option ID = 20650]
4. Salivary amylase [Option ID = 20649]
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34)
35)
36)
37)
Correct Answer :-
Salivary amylase [Option ID = 20649]
Percentage of soil organic matter represented by carbon is
[Question ID = 12669]
1. 72% [Option ID = 20676]
2. 14% [Option ID = 20673]
3. 28% [Option ID = 20674]
4. 58% [Option ID = 20675]
Correct Answer :-
14% [Option ID = 20673]
?Program MARK? is a popular software used to analyze a variety of ecological data pertaining to breeding success, population size, etc. The underlying concept of this program is based on
[Question ID = 12676]
1. Base pair deletions [Option ID = 20703]
2. r and K selection [Option ID = 20704]
3. Lock and key mechanism [Option ID = 20701]
4. Mark-recapture [Option ID = 20702]
Correct Answer :-
Lock and key mechanism [Option ID = 20701]
Who among the following is considered to be the foremost expert on chimpanzees?
[Question ID = 12662]
1. Ernst Mayr [Option ID = 20647]
2. Steve Irwin [Option ID = 20646]
3. Neil Shubin [Option ID = 20648]
4. Jane Goodall [Option ID = 20645]
Correct Answer :-
Jane Goodall [Option ID = 20645]
Closely related species present in the same habitat are likely to experience
[Question ID = 12657]
1. Severe competition [Option ID = 20625]
2. No competition [Option ID = 20627]
3. High cooperation [Option ID = 20628]
4. Low competition [Option ID = 20626]
Correct Answer :-
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38)
39)
40)
41)
Severe competition [Option ID = 20625]
Species are put into groups and then groups are arranged into hierarchies to form a tree like arrangement called dendrogram for the hierarchical classification of vegetation. This is best done
through
[Question ID = 12629]
1. Correlation analysis [Option ID = 20515]
2. Regression analysis [Option ID = 20513]
3. Twinspan analysis [Option ID = 20514]
4. Principle component analysis [Option ID = 20516]
Correct Answer :-
Regression analysis [Option ID = 20513]
Null hypothesis and alternative hypothesis are often symbolized by ____ and _____, respectively.
[Question ID = 12655]
1. H1, H0 [Option ID = 20618]
2. H0, H1 [Option ID = 20617]
3. H0a, H0b [Option ID = 20620]
4. H1a, H1b [Option ID = 20619]
Correct Answer :-
H0, H1 [Option ID = 20617]
Which of the following two areas would have greater species diversity?
Area 1: Species A- 10; Species B- 10; Species C- 10
Area 2:Species A- 1; Species B- 1; Species C- 28 [Question ID = 12638]
1. Area 1 and Area 2 have equal diversity [Option ID = 20551]
2. Area 1 and Area 2 have equal species evenness [Option ID = 20552]
3. Area 1 [Option ID = 20549]
4. Area 2 [Option ID = 20550]
Correct Answer :-
Area 1 [Option ID = 20549]
?????????is a measure of area of biologically productive land or sea required to produce food, material, and energy. [Question ID = 12631]
1. Living Planet Index (LPI) [Option ID = 20522]
2. Ecological Foot Print (EF) [Option ID = 20521]
3. Human Development Index (HDI) [Option ID = 20523]
4. Happy Planet Index (HPI) [Option ID = 20524]
Correct Answer :-
Ecological Foot Print (EF) [Option ID = 20521]
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42)
43)
44)
45)
46)
Interplanar spacing used in XRD analysis is calculated using
[Question ID = 12665]
1. First law of Thermodynamics [Option ID = 20657]
2. Second law of Thermodynamics [Option ID = 20658]
3. Brag?s law [Option ID = 20659]
4. Newton?s first law [Option ID = 20660]
Correct Answer :-
First law of Thermodynamics [Option ID = 20657]
Which one of the following is referred to as nature?s pesticide? [Question ID = 12666]
1. Heptachlor [Option ID = 20662]
2. Toxaphene [Option ID = 20663]
3. Aldrin [Option ID = 20661]
4. Pyrethrum [Option ID = 20664]
Correct Answer :-
Aldrin [Option ID = 20661]
Physiognomy is a????????? qualitative analytical character of a community.
[Question ID = 12633]
1. Synthetic [Option ID = 20531]
2. Species level [Option ID = 20530]
3. Stand level [Option ID = 20529]
4. Stand and species level [Option ID = 20532]
Correct Answer :-
Stand level [Option ID = 20529]
Geostrophic wind occurs when pressure gradient force balances
[Question ID = 12670]
1. Centripetal force [Option ID = 20679]
2. Coriolis force [Option ID = 20677]
3. Frictional force [Option ID = 20678]
4. None of these [Option ID = 20680]
Correct Answer :-
Coriolis force [Option ID = 20677]
Presenting someone else?s ideas or work without their consent or without acknowledgement is
[Question ID = 12661]
1. An act of plagiarism [Option ID = 20643]
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47)
48)
49)
50)
2. An act of betrayal [Option ID = 20641]
3. An act of selfishness [Option ID = 20642]
4. An act of utilitarianism [Option ID = 20644]
Correct Answer :-
An act of betrayal [Option ID = 20641]
The proposers of ?Lotka-Volterra model? , Vito Volterra and Alfred Lotka were
[Question ID = 12651]
1. Ecologists [Option ID = 20602]
2. Biologists [Option ID = 20604]
3. Environmentalists [Option ID = 20603]
4. Mathematicians [Option ID = 20601]
Correct Answer :-
Mathematicians [Option ID = 20601]
The scholarly Latin abbreviation ?et al. ? stands for
[Question ID = 12660]
1. And remaining [Option ID = 20640]
2. And all [Option ID = 20639]
3. And more [Option ID = 20637]
4. And others [Option ID = 20638]
Correct Answer :-
And more [Option ID = 20637]
The maximum per capita rate of increase achieved by a species under ideal environmental conditions is called the
[Question ID = 12637]
1. inherent rate of increase [Option ID = 20546]
2. inherent growth rate [Option ID = 20547]
3. intrinsic growth rate [Option ID = 20545]
4. intrinsic rate of increase [Option ID = 20548]
Correct Answer :-
intrinsic growth rate [Option ID = 20545]
The newly discovered hominin species, Homo luzonensis, was discovered from a cave in
[Question ID = 12658]
1. Cambodia [Option ID = 20630]
2. Indonesia [Option ID = 20632]
3. Philippines [Option ID = 20631]
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1)
2)
3)
4)
DU PhD in Environmental Studies
Topic:- DU_J19_PHD_ES
Which sampling method is thought to provide the most biased data?
[Question ID = 12645]
1. Simple Random sampling [Option ID = 20577]
2. Survey [Option ID = 20579]
3. Convenience sampling [Option ID = 20580]
4. Stratified sampling [Option ID = 20578]
Correct Answer :-
Simple Random sampling [Option ID = 20577]
Which of the following correctly represents the inflection point in a population growth curve?
[Question ID = 12653]
1. 2?K [Option ID = 20611]
2. K/2 [Option ID = 20610]
3. K [Option ID = 20609]
4. 3?K [Option ID = 20612]
Correct Answer :-
K [Option ID = 20609]
Which of the following sensor is not used in the remote sensing satellite?
[Question ID = 12673]
1. Biosensor [Option ID = 20692]
2. Thermal sensor [Option ID = 20691]
3. Electromagnetic sensor [Option ID = 20689]
4. Acoustic sensor [Option ID = 20690]
Correct Answer :-
Electromagnetic sensor [Option ID = 20689]
Which of the following telescope arrays was used to take the first ever picture of a Black hole?
[Question ID = 12659]
1. Event Horizon telescope [Option ID = 20634]
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5)
6)
7)
8)
2. Allen telescope array [Option ID = 20636]
3. Hubble telescope [Option ID = 20635]
4. New horizon telescope [Option ID = 20633]
Correct Answer :-
New horizon telescope [Option ID = 20633]
Which of the following indicators is used to determine the total hardness of water?
[Question ID = 12675]
1. Erichrome Black T [Option ID = 20699]
2. Murexide [Option ID = 20698]
3. Methyl Orange [Option ID = 20697]
4. Phenolphthalein [Option ID = 20700]
Correct Answer :-
Methyl Orange [Option ID = 20697]
Which of the following measurements is likely to show a normal distribution?
[Question ID = 12643]
1. Body length [Option ID = 20569]
2. Percentage of time an animal spends foraging [Option ID = 20572]
3. Proportions of different species in a community [Option ID = 20571]
4. Exponential rates of litter decay [Option ID = 20570]
Correct Answer :-
Body length [Option ID = 20569]
Which exotic species of Prosopis is highly invasive in India?
[Question ID = 12646]
1. Prosopis glandulosa [Option ID = 20583]
2. Prosopis juliflora [Option ID = 20582]
3. Prosopis valutina [Option ID = 20584]
4. Prosopis cineraria [Option ID = 20581]
Correct Answer :-
Prosopis cineraria [Option ID = 20581]
Seed number, seed size, size of individuals, and life span (biological traits) of r-selected species in general are
[Question ID = 12630]
1. Low, large, large, and long [Option ID = 20518]
2. High, large, large, and long [Option ID = 20519]
3. High, large, large, and short [Option ID = 20520]
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9)
10)
11)
12)
4. High, small, small, and short [Option ID = 20517]
Correct Answer :-
High, small, small, and short [Option ID = 20517]
GRIIS stands for:
[Question ID = 12634]
1. Global Register of Introduced and Invasive Species [Option ID = 20533]
2. Global Reduction of Introduced and Invasive Species [Option ID = 20535]
3. Global Red list of Introduced and Invasive Species [Option ID = 20534]
4. Global Research on Introduced and Invasive Species [Option ID = 20536]
Correct Answer :-
Global Register of Introduced and Invasive Species [Option ID = 20533]
Which of the following exists as a polyploid species complex?
[Question ID = 12635]
1. Knautia arvensis (Dipsacaceae) [Option ID = 20539]
2. Gymnadenia conopsea (Orchidaceae) [Option ID = 20538]
3. Lantana camara (Verbenaceae) [Option ID = 20537]
4. All of these [Option ID = 20540]
Correct Answer :-
Lantana camara(Verbenaceae) [Option ID = 20537]
Population of medicinal plants growing logistically can be harvested sustainably at
[Question ID = 12652]
1. Half of the carrying capacity [Option ID = 20605]
2. Double of the carrying capacity [Option ID = 20607]
3. None of these [Option ID = 20608]
4. The carrying capacity [Option ID = 20606]
Correct Answer :-
Half of the carrying capacity [Option ID = 20605]
Which of the following signals might be best used by nocturnal forest animals for identifying their territory?
[Question ID = 12640]
1. Visual and olfactory [Option ID = 20557]
2. Auditory and olfactory [Option ID = 20558]
3. Tactile and olfactory [Option ID = 20559]
4. Tactile and auditory [Option ID = 20560]
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13)
14)
15)
16)
Correct Answer :-
Visual and olfactory [Option ID = 20557]
Mesothelioma is caused by the toxicity of
[Question ID = 12671]
1. Methane [Option ID = 20681]
2. Carbon monoxide [Option ID = 20684]
3. Sulphur di oxide [Option ID = 20682]
4. Asbestos [Option ID = 20683]
Correct Answer :-
Methane [Option ID = 20681]
In a pond ecosystem, which one of the following are the consumers in the heterotrophic layer?
[Question ID = 12664]
1. Spirogyra sp. [Option ID = 20654]
2. Fungi [Option ID = 20656]
3. Benthic insects [Option ID = 20655]
4. Diatoms [Option ID = 20653]
Correct Answer :-
Diatoms [Option ID = 20653]
The Folin-Ciocalteu method is used for determination of
[Question ID = 12648]
1. Nitrate content [Option ID = 20590]
2. Organic carbon content [Option ID = 20589]
3. Phosphate content [Option ID = 20591]
4. Total phenolic content [Option ID = 20592]
Correct Answer :-
Organic carbon content [Option ID = 20589]
According to the principle of ________, scientists avoid more complex explanations when a simple one will do.
[Question ID = 12654]
1. Authority [Option ID = 20615]
2. Parsimony [Option ID = 20613]
3. Falsifiability [Option ID = 20616]
4. Quota sampling [Option ID = 20614]
Correct Answer :-
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17)
18)
19)
20)
Parsimony [Option ID = 20613]
A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the highest 25% of measurements and the highest
value of the lowest 25% of measurements is called the
[Question ID = 12642]
1. 50% confidence interval [Option ID = 20565]
2. Standard error [Option ID = 20567]
3. Standard deviation [Option ID = 20566]
4. Interquartile range [Option ID = 20568]
Correct Answer :-
50% confidence interval [Option ID = 20565]
Unidirectional flow of energy in an ecosystem is governed by the
[Question ID = 12672]
1. First Law of thermodynamics [Option ID = 20685]
2. None of these [Option ID = 20688]
3. Second Law of thermodynamics [Option ID = 20686]
4. Both first and second laws of thermodynamics [Option ID = 20687]
Correct Answer :-
First Law of thermodynamics [Option ID = 20685]
A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures because of the phenomenon of ??????...
[Question ID = 12636]
1. Niche divergence [Option ID = 20544]
2. Niche gradient [Option ID = 20542]
3. Niche complimentarity [Option ID = 20543]
4. Fundamental niche [Option ID = 20541]
Correct Answer :-
Fundamental niche [Option ID = 20541]
Hardness of minerals is measured in
[Question ID = 12674]
1. Clastic Scale [Option ID = 20695]
2. Talc Scale [Option ID = 20693]
3. Moh?s Scale [Option ID = 20694]
4. Beaufort?s Scale [Option ID = 20696]
Correct Answer :-
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21)
22)
23)
24)
25)
Talc Scale [Option ID = 20693]
Methemoglobinemia is caused due to pollution of
[Question ID = 12668]
1. Nitrate [Option ID = 20672]
2. Copper [Option ID = 20669]
3. Iron [Option ID = 20670]
4. Mercury [Option ID = 20671]
Correct Answer :-
Copper [Option ID = 20669]
What does the steep slope of a rank-abundance plot indicate? [Question ID = 12639]
1. greater abundance of dominant species in the community [Option ID = 20554]
2. greater abundance of rare species in the community [Option ID = 20555]
3. greater dominance of common species over rare species in the community [Option ID = 20556]
4. greater dominance of rare species over common species in the community [Option ID = 20553]
Correct Answer :-
greater dominance of rare species over common species in the community [Option ID = 20553]
An experiment that demonstrated the importance of spatial heterogeneity in stabilizing predator-prey interactions is called
[Question ID = 12650]
1. Allee?s experiment [Option ID = 20597]
2. Huffaker?s experiment [Option ID = 20598]
3. Organism interaction experiment [Option ID = 20600]
4. Ecosystem experiment [Option ID = 20599]
Correct Answer :-
Allee?s experiment [Option ID = 20597]
Walkley and Black?s Rapid Titration Method is used to estimate
[Question ID = 12649]
1. Soil phenolic levels [Option ID = 20594]
2. Soil organic carbon [Option ID = 20595]
3. Soil phosphate levels [Option ID = 20593]
4. Soil microbial activity [Option ID = 20596]
Correct Answer :-
Soil phosphate levels [Option ID = 20593]
When a mixture of Azospirillum, Azotobacter, and Bacillus was applied to rhizosphere, fixation of atmospheric nitrogen increased. This was due to the activity of
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26)
27)
28)
29)
[Question ID = 12667]
1. Azospirillum and Bacillus [Option ID = 20666]
2. Azotobacter and Azospirillum [Option ID = 20668]
3. Azotobacter and Bacillus [Option ID = 20667]
4. Bacillus [Option ID = 20665]
Correct Answer :-
Bacillus [Option ID = 20665]
When a doctor uses a stethoscope to count your pulse rate, the doctor is gathering information by using the__________:
[Question ID = 12644]
1. empirical method [Option ID = 20574]
2. rational method [Option ID = 20573]
3. method of authority [Option ID = 20576]
4. method of intuition [Option ID = 20575]
Correct Answer :-
rational method [Option ID = 20573]
When noxious or dangerous animals advertize the fact by bright, conspicuous colors and patterns this is known as
[Question ID = 12647]
1. Allelopathy [Option ID = 20588]
2. Aposematism [Option ID = 20585]
3. Mimicry [Option ID = 20587]
4. Crypsis [Option ID = 20586]
Correct Answer :-
Aposematism [Option ID = 20585]
Long distance mate attraction in the insect order Orthoptera primarily involves
[Question ID = 12641]
1. Visual cues [Option ID = 20564]
2. Tremulation [Option ID = 20562]
3. Pheromones [Option ID = 20563]
4. Acoustic signals [Option ID = 20561]
Correct Answer :-
Acoustic signals [Option ID = 20561]
"Complete competitors cannot coexist" is true for
[Question ID = 12632]
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30)
31)
32)
33)
1. Primary succession [Option ID = 20525]
2. Character displacement [Option ID = 20528]
3. Secondary succession [Option ID = 20526]
4. Competitive exclusion [Option ID = 20527]
Correct Answer :-
Primary succession [Option ID = 20525]
A plateau phase in growth curve of a population signifies ___________.
[Question ID = 12656]
1. Population with an equal number of births and deaths [Option ID = 20622]
2. Population with higher deaths than the births [Option ID = 20623]
3. Population with zero births and high deaths [Option ID = 20624]
4. Population with rapidly growing individuals [Option ID = 20621]
Correct Answer :-
Population with rapidly growing individuals [Option ID = 20621]
?Naturalization-invasion continuum? which conceptualizes the various barriers that a plant must overcome to become alien, casual, naturalized, or invasive in a new environment was proposed by
[Question ID = 12627]
1. Lambers and Poorter, 1999 [Option ID = 20507]
2. Zhou, 2013 [Option ID = 20508]
3. Richardson and Py?ek, 2006 [Option ID = 20505]
4. Simberloff et al. , 2012 [Option ID = 20506]
Correct Answer :-
Richardson and Py?ek, 2006 [Option ID = 20505]
According to the ?Aichi Biodiversity Targets? which strategic goal and target is pertinent to invasive alien species? [Question ID = 12628]
1. Goal A and Target 3 [Option ID = 20509]
2. Goal B and Target 9 [Option ID = 20510]
3. Goal C and Target 13 [Option ID = 20511]
4. Goal D and Target 16 [Option ID = 20512]
Correct Answer :-
Goal A and Target 3 [Option ID = 20509]
Peptide bonds of which one of the following is not synthesized by ribosomes?
[Question ID = 12663]
1. Phytochelatins [Option ID = 20652]
2. Cytochrome C [Option ID = 20651]
3. Alkaline phosphatase [Option ID = 20650]
4. Salivary amylase [Option ID = 20649]
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34)
35)
36)
37)
Correct Answer :-
Salivary amylase [Option ID = 20649]
Percentage of soil organic matter represented by carbon is
[Question ID = 12669]
1. 72% [Option ID = 20676]
2. 14% [Option ID = 20673]
3. 28% [Option ID = 20674]
4. 58% [Option ID = 20675]
Correct Answer :-
14% [Option ID = 20673]
?Program MARK? is a popular software used to analyze a variety of ecological data pertaining to breeding success, population size, etc. The underlying concept of this program is based on
[Question ID = 12676]
1. Base pair deletions [Option ID = 20703]
2. r and K selection [Option ID = 20704]
3. Lock and key mechanism [Option ID = 20701]
4. Mark-recapture [Option ID = 20702]
Correct Answer :-
Lock and key mechanism [Option ID = 20701]
Who among the following is considered to be the foremost expert on chimpanzees?
[Question ID = 12662]
1. Ernst Mayr [Option ID = 20647]
2. Steve Irwin [Option ID = 20646]
3. Neil Shubin [Option ID = 20648]
4. Jane Goodall [Option ID = 20645]
Correct Answer :-
Jane Goodall [Option ID = 20645]
Closely related species present in the same habitat are likely to experience
[Question ID = 12657]
1. Severe competition [Option ID = 20625]
2. No competition [Option ID = 20627]
3. High cooperation [Option ID = 20628]
4. Low competition [Option ID = 20626]
Correct Answer :-
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38)
39)
40)
41)
Severe competition [Option ID = 20625]
Species are put into groups and then groups are arranged into hierarchies to form a tree like arrangement called dendrogram for the hierarchical classification of vegetation. This is best done
through
[Question ID = 12629]
1. Correlation analysis [Option ID = 20515]
2. Regression analysis [Option ID = 20513]
3. Twinspan analysis [Option ID = 20514]
4. Principle component analysis [Option ID = 20516]
Correct Answer :-
Regression analysis [Option ID = 20513]
Null hypothesis and alternative hypothesis are often symbolized by ____ and _____, respectively.
[Question ID = 12655]
1. H1, H0 [Option ID = 20618]
2. H0, H1 [Option ID = 20617]
3. H0a, H0b [Option ID = 20620]
4. H1a, H1b [Option ID = 20619]
Correct Answer :-
H0, H1 [Option ID = 20617]
Which of the following two areas would have greater species diversity?
Area 1: Species A- 10; Species B- 10; Species C- 10
Area 2:Species A- 1; Species B- 1; Species C- 28 [Question ID = 12638]
1. Area 1 and Area 2 have equal diversity [Option ID = 20551]
2. Area 1 and Area 2 have equal species evenness [Option ID = 20552]
3. Area 1 [Option ID = 20549]
4. Area 2 [Option ID = 20550]
Correct Answer :-
Area 1 [Option ID = 20549]
?????????is a measure of area of biologically productive land or sea required to produce food, material, and energy. [Question ID = 12631]
1. Living Planet Index (LPI) [Option ID = 20522]
2. Ecological Foot Print (EF) [Option ID = 20521]
3. Human Development Index (HDI) [Option ID = 20523]
4. Happy Planet Index (HPI) [Option ID = 20524]
Correct Answer :-
Ecological Foot Print (EF) [Option ID = 20521]
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42)
43)
44)
45)
46)
Interplanar spacing used in XRD analysis is calculated using
[Question ID = 12665]
1. First law of Thermodynamics [Option ID = 20657]
2. Second law of Thermodynamics [Option ID = 20658]
3. Brag?s law [Option ID = 20659]
4. Newton?s first law [Option ID = 20660]
Correct Answer :-
First law of Thermodynamics [Option ID = 20657]
Which one of the following is referred to as nature?s pesticide? [Question ID = 12666]
1. Heptachlor [Option ID = 20662]
2. Toxaphene [Option ID = 20663]
3. Aldrin [Option ID = 20661]
4. Pyrethrum [Option ID = 20664]
Correct Answer :-
Aldrin [Option ID = 20661]
Physiognomy is a????????? qualitative analytical character of a community.
[Question ID = 12633]
1. Synthetic [Option ID = 20531]
2. Species level [Option ID = 20530]
3. Stand level [Option ID = 20529]
4. Stand and species level [Option ID = 20532]
Correct Answer :-
Stand level [Option ID = 20529]
Geostrophic wind occurs when pressure gradient force balances
[Question ID = 12670]
1. Centripetal force [Option ID = 20679]
2. Coriolis force [Option ID = 20677]
3. Frictional force [Option ID = 20678]
4. None of these [Option ID = 20680]
Correct Answer :-
Coriolis force [Option ID = 20677]
Presenting someone else?s ideas or work without their consent or without acknowledgement is
[Question ID = 12661]
1. An act of plagiarism [Option ID = 20643]
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47)
48)
49)
50)
2. An act of betrayal [Option ID = 20641]
3. An act of selfishness [Option ID = 20642]
4. An act of utilitarianism [Option ID = 20644]
Correct Answer :-
An act of betrayal [Option ID = 20641]
The proposers of ?Lotka-Volterra model? , Vito Volterra and Alfred Lotka were
[Question ID = 12651]
1. Ecologists [Option ID = 20602]
2. Biologists [Option ID = 20604]
3. Environmentalists [Option ID = 20603]
4. Mathematicians [Option ID = 20601]
Correct Answer :-
Mathematicians [Option ID = 20601]
The scholarly Latin abbreviation ?et al. ? stands for
[Question ID = 12660]
1. And remaining [Option ID = 20640]
2. And all [Option ID = 20639]
3. And more [Option ID = 20637]
4. And others [Option ID = 20638]
Correct Answer :-
And more [Option ID = 20637]
The maximum per capita rate of increase achieved by a species under ideal environmental conditions is called the
[Question ID = 12637]
1. inherent rate of increase [Option ID = 20546]
2. inherent growth rate [Option ID = 20547]
3. intrinsic growth rate [Option ID = 20545]
4. intrinsic rate of increase [Option ID = 20548]
Correct Answer :-
intrinsic growth rate [Option ID = 20545]
The newly discovered hominin species, Homo luzonensis, was discovered from a cave in
[Question ID = 12658]
1. Cambodia [Option ID = 20630]
2. Indonesia [Option ID = 20632]
3. Philippines [Option ID = 20631]
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4. Laos [Option ID = 20629]
Correct Answer :-
Laos [Option ID = 20629]
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This post was last modified on 19 June 2020