Delhi University Entrance Test (DUET) 2020 Previous Year Question Paper With Answer Key
DU MSc Environmental Studies
Topic: ES MSC S2N
1) Which of the following is thought to be a possible consequence of rising CO levels?
2
[Question ID = 10618]
1. Increased breakdown of atmospheric ozone [Option ID = 42466]
2. Increased vegetative productivity [Option ID = 42467]
3. Falling global temperature [Option ID = 42468]
4. More rapid warming at the equator than at the poles [Option ID = 42469]
Correct Answer :
Increased vegetative productivity [Option ID = 42467]
2) When climbing a mountain, we can observe transitions in biological communities that are analogous to the changes:
[Question ID = 10619]
1. at different depths in the ocean [Option ID = 42470]
2. in a community through different seasons [Option ID = 42471]
3. in an ecosystem as it evolves over time [Option ID = 42472]
4. in biomes at different latitudes [Option ID = 42473]
Correct Answer :
in biomes at different latitudes [Option ID = 42473]
3) What do diversity indices such as the Shannon Index take into account?
[Question ID = 10620]
1. Alpha diversity and beta diversity [Option ID = 42474]
2. Evenness and beta diversity [Option ID = 42475]
3. Species richness and evenness [Option ID = 42476]
4. Species richness and beta diversity [Option ID = 42477]
Correct Answer :
Species richness and evenness [Option ID = 42476]
4) The theory that primary productivity is limited by whichever necessary metabolic requirement is present in the least
supply relative to demand is known as:
[Question ID = 10621]
1. Law of minimum metabolic requirement [Option ID = 42478]
2. Minimum metabolic requirement [Option ID = 42479]
3. Principle of limiting factors [Option ID = 42480]
4. Theory of the minimum metabolic requirement [Option ID = 42481]
Correct Answer :
Principle of limiting factors [Option ID = 42480]
5) A variable that is affected by and responds to changes in the manipulated variable is called:
[Question ID = 10622]
1. controlled variable [Option ID = 42482]
2. dependent variable [Option ID = 42483]
3. independent variable [Option ID = 42484]
4. random variable [Option ID = 42485]
Correct Answer :
dependent variable [Option ID = 42483]
6) In a frequency distribution graph, frequencies are presented on the ________ and the scores (categories) are listed on
the ________ .
[Question ID = 10623]
1. Class interval/horizontal line [Option ID = 42486]
2. Horizontal line/vertical line [Option ID = 42487]
3. X axis /Y axis [Option ID = 42488]
4. Y axis/X axis [Option ID = 42489]
Correct Answer :
Y axis/X axis [Option ID = 42489]
7) Which of the following international conventions restricts international trade in endangered species?
[Question ID = 10624]
1. CBD [Option ID = 42490]
2. CITES [Option ID = 42491]
3. ESA [Option ID = 42492]
4. UNEP [Option ID = 42493]
Correct Answer :
CITES [Option ID = 42491]
8) An ecological footprint is:
[Question ID = 10625]
1. a measure of the earth's biological capacity [Option ID = 42494]
2. amount of wilderness available on earth [Option ID = 42495]
3. amount of biologically productive land and water a person uses [Option ID = 42496]
4. a measure of a person's contribution to creating a sustainable environment [Option ID = 42497]
Correct Answer :
amount of biologically productive land and water a person uses [Option ID = 42496]
9) What is the difference between an endangered species and a threatened species?
[Question ID = 10626]
1. A threatened species may still be abundant now but likely to become endangered in the near future [Option ID = 42498]
2. A threatened species is at the brink of extinction now and an endangered species is likely to be at the brink in the near future [Option ID = 42499]
3. A threatened species is becoming endangered specifically because of human activities [Option ID = 42500]
4. There is no difference. The two terms are interchangeable [Option ID = 42501]
Correct Answer :
A threatened species may still be abundant now but likely to become endangered in the near future [Option ID = 42498]
10) When a doctor uses a stethoscope to count your pulse rate, she is gathering information by using the__________ :
[Question ID = 10627]
1. empirical method [Option ID = 42502]
2. method of intuition [Option ID = 42503]
3. method of authority [Option ID = 42504]
4. rational method [Option ID = 42505]
Correct Answer :
empirical method [Option ID = 42502]
11) The maximum per capita rate of increase achieved by a species under ideal environmental conditions is called the:
[Question ID = 10628]
1. inherent rate of increase [Option ID = 42506]
2. inherent growth rate [Option ID = 42507]
3. intrinsic growth rate [Option ID = 42508]
4. intrinsic rate of increase [Option ID = 42509]
Correct Answer :
intrinsic rate of increase [Option ID = 42509]
12) What is the LotkaVolterra competition model based on?
[Question ID = 10629]
1. Exponential population growth equation [Option ID = 42510]
2. Life table equation [Option ID = 42511]
3. Logistic population growth equation [Option ID = 42512]
4. Realized per capita growth rate equation [Option ID = 42513]
Correct Answer :
Logistic population growth equation [Option ID = 42512]
13) The best measure of central tendency for an extremely skewed distribution of scores would be ________.
[Question ID = 10630]
1. cannot be determined [Option ID = 42514]
2. the mean [Option ID = 42515]
3. the median [Option ID = 42516]
4. the mode [Option ID = 42517]
Correct Answer :
the median [Option ID = 42516]
14) Trade winds are the prevailing pattern of surface winds. The factors determining patterns of these winds are:
[Question ID = 10631]
1. gravitational field of Planet Earth
[Option ID = 42518]
2. rotational pattern of Earth
[Option ID = 42519]
3. uneven surface temperature
[Option ID = 42520]
4. All of tthese
[Option ID = 42521]
Correct Answer :
uneven surface temperature
[Option ID = 42520]
15) Which of the following shows the correct order of soil texture from larger to smaller diameters?
[Question ID = 10632]
1. Gravel, sand, clay, and silt [Option ID = 42522]
2. Gravel, sand, silt, and clay [Option ID = 42523]
3. Gravel, silt, sand, and clay [Option ID = 42524]
4. Sand, gravel, silt, and clay [Option ID = 42525]
Correct Answer :
Gravel, sand, silt, and clay [Option ID = 42523]
16) All members in which of the following groups have the greatest number of characteristics in common?
[Question ID = 10633]
1. Class [Option ID = 42526]
2. Genus [Option ID = 42527]
3. Phylum [Option ID = 42528]
4. Species [Option ID = 42529]
Correct Answer :
Species [Option ID = 42529]
17) What does the system of binomial nomenclature that assigns a unique name to each organism describe?
[Question ID = 10634]
1. Family and species [Option ID = 42530]
2. Genus and family [Option ID = 42531]
3. Order and family [Option ID = 42532]
4. Species and genus [Option ID = 42533]
Correct Answer :
Species and genus [Option ID = 42533]
18) Wings of birds and insects have the same function but they do not share the same evolutionary origin. Bird and insect
wings are considered to be which of the following?
[Question ID = 10635]
1. Analogous [Option ID = 42534]
2. Homologous [Option ID = 42535]
3. Phylogenetic [Option ID = 42536]
4. Taxonomic [Option ID = 42537]
Correct Answer :
Analogous [Option ID = 42534]
19) Which of the following animal phyla is most likely to leave fossils?
[Question ID = 10636]
1. Annelida [Option ID = 42538]
2. Cnidaria [Option ID = 42539]
3. Chordata [Option ID = 42540]
4. Nematoda [Option ID = 42541]
Correct Answer :
Chordata [Option ID = 42540]
20) Which of the following systems is active under stress?
[Question ID = 10637]
1. Complete autonomic nervous system [Option ID = 42542]
2. Parasympathetic nervous system [Option ID = 42543]
3. Sympathetic nervous system [Option ID = 42544]
4. Somatic nervous system [Option ID = 42545]
Correct Answer :
Sympathetic nervous system [Option ID = 42544]
21) Migration of fish from fresh water to marine water for reproduction is known as:
[Question ID = 10638]
1. Anadromous [Option ID = 42546]
2. Amphidromous [Option ID = 42547]
3. Catadromous [Option ID = 42548]
4. Potamodromous [Option ID = 42549]
Correct Answer :
Catadromous [Option ID = 42548]
22) How does pupa survive through its life cycle?
[Question ID = 10639]
1. Caudal flaps [Option ID = 42550]
2. Feeding through the water [Option ID = 42551]
3. Feeding through the proboscis [Option ID = 42552]
4. Through food accumulated in the larval stage [Option ID = 42553]
Correct Answer :
Through food accumulated in the larval stage [Option ID = 42553]
23) Melatonin is synthesized from which of the following?
[Question ID = 10640]
1. Histamine [Option ID = 42554]
2. Melanine [Option ID = 42555]
3. Tyrosine [Option ID = 42556]
4. Tryptophan [Option ID = 42557]
Correct Answer :
Tryptophan [Option ID = 42557]
24) The slogan `Taking Action for living planet' was used by:
[Question ID = 10641]
1. UNESCO
[Option ID = 42558]
2. United Nations Environment Programme
[Option ID = 42559]
3. World bank
[Option ID = 42560]
4. World Wide Fund for Nature
[Option ID = 42561]
Correct Answer :
World Wide Fund for Nature
[Option ID = 42561]
25) The Guinness Book of World Records has declared __________ as the largest river island in the world.
[Question ID = 10642]
1. Bananal [Option ID = 42562]
2. Marajo [Option ID = 42563]
3. Majuli [Option ID = 42564]
4. Nongkhnum [Option ID = 42565]
Correct Answer :
Majuli [Option ID = 42564]
26) In an experiment, we manipulate a/an ___________ variable to observe an effect on a/an____________ variable.
[Question ID = 10643]
1. dependent, another dependent [Option ID = 42566]
2. dependent, independent [Option ID = 42567]
3. independent, another independent [Option ID = 42568]
4. independent, dependent [Option ID = 42569]
Correct Answer :
independent, dependent [Option ID = 42569]
27) Rooted plants are found only in the __________ zone of a lake.
[Question ID = 10644]
1. limnetic [Option ID = 42570]
2. littoral [Option ID = 42571]
3. nektonic [Option ID = 42572]
4. pelagic [Option ID = 42573]
Correct Answer :
littoral [Option ID = 42571]
28) What does "Environmental Unity" mean?
[Question ID = 10645]
1. Everything affects everything else
[Option ID = 42574]
2. Humans have only one environment
[Option ID = 42575]
3. The environment is a closed system
[Option ID = 42576]
4. All of these
[Option ID = 42577]
Correct Answer :
Everything affects everything else
[Option ID = 42574]
29) Exponential growth is characterized by which of the following?
[Question ID = 10646]
1. 1) Growth at a constant rate
[Option ID = 42578]
2. 2) Growth at constant N
[Option ID = 42579]
3. 3) Both (1) and (2)
[Option ID = 42580]
4. 4) None of these
[Option ID = 42581]
Correct Answer :
1) Growth at a constant rate
[Option ID = 42578]
30) In terms of a population, what does "age structure" refer to?
[Question ID = 10647]
1. Per capita production of goods and services by age
[Option ID = 42582]
2. The proportion of the population in different age groups
[Option ID = 42583]
3. The rate of population growth
[Option ID = 42584]
4. All of these
[Option ID = 42585]
Correct Answer :
The proportion of the population in different age groups
[Option ID = 42583]
31) The processes responsible for formation and change of Earth's materials are collectively known as the:
[Question ID = 10648]
1. Atmospheric cycle [Option ID = 42586]
2. Continental cycle [Option ID = 42587]
3. Geologic cycle [Option ID = 42588]
4. Hydrologic cycle [Option ID = 42589]
Correct Answer :
Geologic cycle [Option ID = 42588]
32) In the context of biochemical cycles, what does "flux" refer to?
[Question ID = 10649]
1. A state of disturbance from natural conditions [Option ID = 42590]
2. Loss of matter or energy from the Earth system [Option ID = 42591]
3. The loss of water vapour through the pores of plants [Option ID = 42592]
4. The transfer of material or energy from one reservoir to another [Option ID = 42593]
Correct Answer :
The transfer of material or energy from one reservoir to another [Option ID = 42593]
33) Atmospheric levels of carbon dioxide and oxygen are affected by the shortterm carbon cycle and which of the
following longterm cycle?
[Question ID = 10650]
1. Carbonatesilicate cycle [Option ID = 42594]
2. Carbonphosphate cycle [Option ID = 42595]
3. Carbonsilicate cycle [Option ID = 42596]
4. Carbonsulphate cycle [Option ID = 42597]
Correct Answer :
Carbonatesilicate cycle [Option ID = 42594]
34) What are the two fundamental processes that must be studied to understand ecosystem structure and functioning?
[Question ID = 10651]
1. Flow of energy and cycling of chemical elements
[Option ID = 42598]
2. Photosynthesis and respiration
[Option ID = 42599]
3. Waste decomposition and cycling of energy
[Option ID = 42600]
4. All of these
[Option ID = 42601]
Correct Answer :
Flow of energy and cycling of chemical elements
[Option ID = 42598]
35) What are the species that are most abundant or otherwise most important in an ecological community called?
[Question ID = 10652]
1. Common [Option ID = 42602]
2. Dominant [Option ID = 42603]
3. Pioneer [Option ID = 42604]
4. Predominant [Option ID = 42605]
Correct Answer :
Dominant [Option ID = 42603]
36) Which of the following processes lead to biological evolution?
[Question ID = 10653]
1. Migration and genetic drift
[Option ID = 42606]
2. Mutation
[Option ID = 42607]
3. Natural selection
[Option ID = 42608]
4. All of these
[Option ID = 42609]
Correct Answer :
All of these
[Option ID = 42609]
37) What are the dominant plants in a fresh water biome called?
[Question ID = 10654]
1. Eichhornia sp.
[Option ID = 42610]
2. Phytoplankton
[Option ID = 42611]
3. Spirogryra
[Option ID = 42612]
4. Vallisneria sp.
[Option ID = 42613]
Correct Answer :
Phytoplankton
[Option ID = 42611]
38) In general what percentage of energy received by green plants from the sun is converted into new plant tissues?
[Question ID = 10655]
1. less than 5 [Option ID = 42614]
2. less than 10 [Option ID = 42615]
3. less than 15 [Option ID = 42616]
4. less than 25 [Option ID = 42617]
Correct Answer :
less than 5 [Option ID = 42614]
39) What are the main components of Integrated Pest Management (IPM)?
[Question ID = 10656]
1. Biological control
[Option ID = 42618]
2. Land culture
[Option ID = 42619]
3. Chemical control
[Option ID = 42620]
4. All of these
[Option ID = 42621]
Correct Answer :
All of these
[Option ID = 42621]
40) The dose of a toxin at which a specified percentage of test population dies is known as:
[Question ID = 10657]
1. control [Option ID = 42622]
2. lethal dose [Option ID = 42623]
3. placebo dose [Option ID = 42624]
4. toxic dose [Option ID = 42625]
Correct Answer :
lethal dose [Option ID = 42623]
41) Why is natural gas considered a better fossil fuel than oil?
[Question ID = 10658]
1. Burning natural gas is cleaner than burning oil [Option ID = 42626]
2. Gas commands a higher price than oil [Option ID = 42627]
3. Gas is easier to transport [Option ID = 42628]
4. Gas is a renewable resource [Option ID = 42629]
Correct Answer :
Burning natural gas is cleaner than burning oil [Option ID = 42626]
42) Direct conversion of electricity using sunlight without an intermediate fluid medium is accomplished by which of the
following?
[Question ID = 10659]
1. Liion battery
[Option ID = 42630]
2. Photochemical cell
[Option ID = 42631]
3. Photovoltaic cell
[Option ID = 42632]
4. All of these
[Option ID = 42633]
Correct Answer :
Photovoltaic cell
[Option ID = 42632]
43) Longterm plans expect to finish the cleanup work at Chernobyl by which of the following year?
[Question ID = 10660]
1. 2020 [Option ID = 42634]
2. 2025 [Option ID = 42635]
3. 2036 [Option ID = 42636]
4. 2065 [Option ID = 42637]
Correct Answer :
2065 [Option ID = 42637]
44) What is saltwater intrusion?
[Question ID = 10661]
1. Excessive withdrawal of groundwater
[Option ID = 42638]
2. Invasion of saltwater into freshwater supplies
[Option ID = 42639]
3. Natural outflow of water from a natural spring
[Option ID = 42640]
4. All of these
[Option ID = 42641]
Correct Answer :
Invasion of saltwater into freshwater supplies
[Option ID = 42639]
45) Which of the following compounds absorb earthshine in the wavelengths that typically pass through the atmospheric
window?
[Question ID = 10662]
1. Carbon dioxie [Option ID = 42642]
2. Chloroflourocarbons [Option ID = 42643]
3. Ozone [Option ID = 42644]
4. Water vapour [Option ID = 42645]
Correct Answer :
Chloroflourocarbons [Option ID = 42643]
46) About what percentage of the solar energy is reflected back by ice?
[Question ID = 10663]
1. 10 ? 25% [Option ID = 42646]
2. 30 ? 45% [Option ID = 42647]
3. 60 ? 75% [Option ID = 42648]
4. 80 ? 95% [Option ID = 42649]
Correct Answer :
80 ? 95% [Option ID = 42649]
47) Sulphur dioxide emissions are predominantly caused by which of the following?
[Question ID = 10664]
1. 1) Burning coal
[Option ID = 42650]
2. 2) Automobile emissions
[Option ID = 42651]
3. 3) Both (1) and (2)
[Option ID = 42652]
4. 4) Photochemical smog
[Option ID = 42653]
Correct Answer :
3) Both (1) and (2)
[Option ID = 42652]
48) What is the residence time of CFCs in the atmosphere?
[Question ID = 10665]
1. 10 years [Option ID = 42654]
2. 100 years [Option ID = 42655]
3. 1000 years [Option ID = 42656]
4. 10000 years [Option ID = 42657]
Correct Answer :
100 years [Option ID = 42655]
49) Which of the following is a type of evaporite?
[Question ID = 10666]
1. 1) Marine
[Option ID = 42658]
2. 2) Nonmarine
[Option ID = 42659]
3. 3) Both (1) and (2)
[Option ID = 42660]
4. 4) None of these
[Option ID = 42661]
Correct Answer :
3) Both (1) and (2)
[Option ID = 42660]
50) How does urbanization affect a local hydrologic system?
[Question ID = 10667]
1. By increasing storm runoff
[Option ID = 42662]
2. By increasing infiltration into groundwater
[Option ID = 42663]
3. By intercepting storm runoff before it reaches streams
[Option ID = 42664]
4. All of these
[Option ID = 42665]
Correct Answer :
By increasing storm runoff
[Option ID = 42662]
51) Which of the following radiations is not affected by stratospheric ozone and is transmitted to the surface of the earth?
[Question ID = 10668]
1. UVA
[Option ID = 42666]
2. UVB
[Option ID = 42667]
3. UVC
[Option ID = 42668]
4. All of the above
[Option ID = 42669]
Correct Answer :
UVA
[Option ID = 42666]
52) Which of the following set of gases are emitted at municipal landfill sites?
[Question ID = 10669]
1. CH ,H
4
S, CO
2
, NH
2
4 [Option ID = 42670]
2. NH , CO, SO
4
, CH
2
4 [Option ID = 42671]
3. NH , H
4
S, CO
2
[Option ID = 42672]
4. SO and CH
2
4 [Option ID = 42673]
Correct Answer :
CH ,H
4
S, CO
2
, NH
2
4 [Option ID = 42670]
53) Which of the following is true for flows through the boundaries of a closed thermodynamic system?
[Question ID = 10670]
1. Energy flows but matter does not [Option ID = 42674]
2. Energy and Matter flow [Option ID = 42675]
3. Matter flows but energy does not [Option ID = 42676]
4. Neither energy nor matter flow [Option ID = 42677]
Correct Answer :
Energy flows but matter does not [Option ID = 42674]
54) The largest soil type found in India is:
[Question ID = 10671]
1. Alpine soil [Option ID = 42678]
2. Clayey soil [Option ID = 42679]
3. Red soil [Option ID = 42680]
4. Black soil [Option ID = 42681]
Correct Answer :
Red soil [Option ID = 42680]
55) Polychlorinated biphenyls (PCBs) can cause:
[Question ID = 10672]
1. cancers of liver and stomach
[Option ID = 42682]
2. foetal deformities
[Option ID = 42683]
3. nervous disorder
[Option ID = 42684]
4. All of the above
[Option ID = 42685]
Correct Answer :
All of the above
[Option ID = 42685]
56) The Climate Change Action Plan of the Government of India has identified ________ as a priority for exploitation.
[Question ID = 10673]
1. Nuclear energy [Option ID = 42686]
2. Solar energy [Option ID = 42687]
3. Thermal energy [Option ID = 42688]
4. Wind energy [Option ID = 42689]
Correct Answer :
Solar energy [Option ID = 42687]
57) tdistribution in a large population approaches:
[Question ID = 10674]
1. chisquare distribution
[Option ID = 42690]
2. binomial distribution
[Option ID = 42691]
3. normal distribution
[Option ID = 42692]
4. Poisson distribution
[Option ID = 42693]
Correct Answer :
normal distribution
[Option ID = 42692]
58) As per the Bureau of Indian Standards (BIS), the total dissolved solids in a sample of domestic drinking water must not
exceed:
[Question ID = 10675]
1. 100 ppm
[Option ID = 42694]
2. 250 ppm
[Option ID = 42695]
3. 500 ppm
[Option ID = 42696]
4. 600 ppm
[Option ID = 42697]
Correct Answer :
500 ppm
[Option ID = 42696]
59) The organic component of a water supply can be best assessed by measuring:
[Question ID = 10676]
1. BOD [Option ID = 42698]
2. COD [Option ID = 42699]
3. DO [Option ID = 42700]
4. TOC [Option ID = 42701]
Correct Answer :
TOC [Option ID = 42701]
60) _______ is a superbug that is credited with the ability to clean up oil spills.
[Question ID = 10677]
1. Bacillus subtilis
[Option ID = 42702]
2. Bacillus denitrificans
[Option ID = 42703]
3. Pseudomonas putida
[Option ID = 42704]
4. Rhizobium olivera
[Option ID = 42705]
Correct Answer :
Pseudomonas putida
[Option ID = 42704]
61) Hospitals employ red coloured containers to dump______________ .
[Question ID = 10678]
1. discarded laboratory cultures [Option ID = 42706]
2. discarded sharps [Option ID = 42707]
3. human anatomical waste [Option ID = 42708]
4. housekeeping waste [Option ID = 42709]
Correct Answer :
discarded laboratory cultures [Option ID = 42706]
62) _____________ facilitates cellulose degradation in termite gut.
[Question ID = 10679]
1. Citrobacter
[Option ID = 42710]
2. Enterococcus
[Option ID = 42711]
3. Enterobacter
[Option ID = 42712]
4. Trichonympha
[Option ID = 42713]
Correct Answer :
Trichonympha
[Option ID = 42713]
63) Baseline studies in an Environmental Impact Assessment refer to:
[Question ID = 10680]
1. identification of the best available project options [Option ID = 42714]
2. the anthropogenic profile of the project area [Option ID = 42715]
3. the floral and faunal status of the proposed project area [Option ID = 42716]
4. the prevalent environmental setting of the proposed project area [Option ID = 42717]
Correct Answer :
the prevalent environmental setting of the proposed project area [Option ID = 42717]
64) Remote sensing earth observing satellites are normally stationed at:
[Question ID = 10681]
1. Equatorial orbit
[Option ID = 42718]
2. Geosynchronous orbit
[Option ID = 42719]
3. Sun synchronous orbit
[Option ID = 42720]
4. All of these
[Option ID = 42721]
Correct Answer :
Sun synchronous orbit
[Option ID = 42720]
65) Surface winds around the mid latitude are usually:
[Question ID = 10682]
1. Cyclonic [Option ID = 42722]
2. Geostrophic [Option ID = 42723]
3. Sungeostrophic [Option ID = 42724]
4. Typhoonic [Option ID = 42725]
Correct Answer :
Geostrophic [Option ID = 42723]
66) After the official notification of an Environmental Impact Assessment, public hearing must be held within how many
days?
[Question ID = 10683]
1. 10 days [Option ID = 42726]
2. 20 days [Option ID = 42727]
3. 30 days [Option ID = 42728]
4. 40 days [Option ID = 42729]
Correct Answer :
30 days [Option ID = 42728]
67) Lincoln index is a statistical measure used to estimate which of the following?
[Question ID = 10684]
1. Total dominance [Option ID = 42730]
2. Total frequency [Option ID = 42731]
3. Total population density [Option ID = 42732]
4. Total population density [Option ID = 42733]
Correct Answer :
Total population density [Option ID = 42732]
68) The nature of food web at the developmental stage of a succession is:
[Question ID = 10685]
1. linear, predominantly detritus [Option ID = 42734]
2. linear, predominantly grazing [Option ID = 42735]
3. web like, predominantly detritus [Option ID = 42736]
4. web like, predominantly grazing [Option ID = 42737]
Correct Answer :
linear, predominantly grazing [Option ID = 42735]
69) Isogons are the points that join beds of:
[Question ID = 10686]
1. equal dip amount [Option ID = 42738]
2. equal thickness [Option ID = 42739]
3. opposite strike direction [Option ID = 42740]
4. same strike direction [Option ID = 42741]
Correct Answer :
equal dip amount [Option ID = 42738]
70) A drowned river valley estuary is formed when:
[Question ID = 10687]
1. a barrier island or sand bar separates a section of the coast where fresh water enters. [Option ID = 42742]
2. sea level rose at the end of the last glacial age invading low lands and rivers. [Option ID = 42743]
3. a deep valley is created by retreating glaciers. [Option ID = 42744]
4. land sinks due to movements of the crust. [Option ID = 42745]
Correct Answer :
sea level rose at the end of the last glacial age invading low lands and rivers. [Option ID = 42743]
71) Which of the following biofuels is produced from acidification and distillation of woody crops?
[Question ID = 10688]
1. Ethanol [Option ID = 42746]
2. Esters [Option ID = 42747]
3. Methanol [Option ID = 42748]
4. Producer gas [Option ID = 42749]
Correct Answer :
Methanol [Option ID = 42748]
72) A good automobile fuel in addition to having high calorific value should have:
[Question ID = 10689]
1. high ignition temperature [Option ID = 42750]
2. high viscosity [Option ID = 42751]
3. low ignition temperature [Option ID = 42752]
4. moderate ignition temperature [Option ID = 42753]
Correct Answer :
moderate ignition temperature [Option ID = 42753]
73) Aquifers that extend continuously from the land surface through material of high permeability are:
[Question ID = 10690]
1. aquitards [Option ID = 42754]
2. aquicludes [Option ID = 42755]
3. confined aquifers [Option ID = 42756]
4. unconfined aquifers [Option ID = 42757]
Correct Answer :
unconfined aquifers [Option ID = 42757]
74) The process of splitting bigger hydrocarbon into smaller hydrocarbon molecules is called:
[Question ID = 10691]
1. cracking [Option ID = 42758]
2. combustion [Option ID = 42759]
3. pyrolysis [Option ID = 42760]
4. thermal decomposition [Option ID = 42761]
Correct Answer :
cracking [Option ID = 42758]
75) The sequence for ease of decomposition of organic compounds in soil is:
[Question ID = 10692]
1. Crude protein ? Starch ? Fat ? Lignin ? Hemicellulose [Option ID = 42762]
2. Fat ? Starch ? Lignin ? Hemicellulose ? Crude protein [Option ID = 42763]
3. Lignin ? Hemicellulose ? Starch ? Crude protein ? Fat [Option ID = 42764]
4. Starch ? Crude protein ? Hemicellulose ? Fat ? Lignin [Option ID = 42765]
Correct Answer :
Starch ? Crude protein ? Hemicellulose ? Fat ? Lignin [Option ID = 42765]
76) Raunkiaer's normal biological spectrum for phanerogamic flora of the world exhibits which one of the following
sequences of occurrence of different life forms?
[Question ID = 10693]
1. Phanerophytes, Chaemophytes, Hemicryptophytes, Cryptophytes, Therophytes [Option ID = 42766]
2. Phanerophytes, Hemicryptophytes, Cryptophytes, Chaemophytes, Therophytes [Option ID = 42767]
3. Phanerophytes, Hemicryptophytes, Therophytes, Chaemophytes, Cryptophytes [Option ID = 42768]
4. Phanerophytes, Hemicryptophytes, Therophytes, Cryptophytes, Chaemophytes [Option ID = 42769]
Correct Answer :
Phanerophytes, Hemicryptophytes, Therophytes, Chaemophytes, Cryptophytes [Option ID = 42768]
77) Which of the following categories of earthworms is most suitable for wasteland reclamation?
[Question ID = 10694]
1. Epigeic [Option ID = 42770]
2. Anecic [Option ID = 42771]
3. Endogeic [Option ID = 42772]
4. None of the above [Option ID = 42773]
Correct Answer :
Endogeic [Option ID = 42772]
78) The Keystone predator species maintain diversity in a community by:
[Question ID = 10695]
1. allowing immigration of other predators [Option ID = 42774]
2. competitively excluding other predators [Option ID = 42775]
3. coevolving with their prey [Option ID = 42776]
4. preying on community's dominant species [Option ID = 42777]
Correct Answer :
preying on community's dominant species [Option ID = 42777]
79) The power to declare an area as a sanctuary or national park of central Government in India's Wildlife (Protection) Act
1972 is under:
[Question ID = 10696]
1. Section 38 [Option ID = 42778]
2. Section 39 [Option ID = 42779]
3. Section 18 [Option ID = 42780]
4. Section 27 [Option ID = 42781]
Correct Answer :
Section 38 [Option ID = 42778]
80) As per the Water (Prevention & Control of Pollution) 1974 Act of India, the entire National Capital Territory of Delhi has
been declared as ____________ under Section 19.
[Question ID = 10697]
1. Water pollution control area
[Option ID = 42782]
2. Water pollution prevention area
[Option ID = 42783]
3. Water pollution prevention control area
[Option ID = 42784]
4. None of these
[Option ID = 42785]
Correct Answer :
Water pollution prevention control area
[Option ID = 42784]
81) Noise pollution was inserted as a type of pollution in the Air (Prevention & Control of Pollution) Act in:
[Question ID = 10698]
1. 1981 [Option ID = 42786]
2. 1982 [Option ID = 42787]
3. 1987 [Option ID = 42788]
4. 2000 [Option ID = 42789]
Correct Answer :
1987 [Option ID = 42788]
82) Islets of Langerhans are present in which of the following organs?
[Question ID = 10699]
1. Intestines [Option ID = 42790]
2. Lymph Nodes [Option ID = 42791]
3. Pancreas [Option ID = 42792]
4. Thyroid [Option ID = 42793]
Correct Answer :
Pancreas [Option ID = 42792]
83) The loss of genetic variation when a population is established by a small number of individuals from a larger population
is called:
[Question ID = 10700]
1. Founder's Effect
[Option ID = 42794]
2. Pleiotropy
[Option ID = 42795]
3. Settler's Effect
[Option ID = 42796]
4. None of these
[Option ID = 42797]
Correct Answer :
Founder's Effect
[Option ID = 42794]
84) Echolocation in Bats and Cetaceans (Whales and Dolphins) is an example of which of the following?
[Question ID = 10701]
1. Convergent Evolution [Option ID = 42798]
2. Divergent Evolution [Option ID = 42799]
3. Homeostasis [Option ID = 42800]
4. Parallel Evolution [Option ID = 42801]
Correct Answer :
Convergent Evolution [Option ID = 42798]
85) Which of the following is not a pesticide?
[Question ID = 10702]
1. Dieldrin
[Option ID = 42802]
2. Dichlorodiphenyldichloroethane (DDD)
[Option ID = 42803]
3. Lindane
[Option ID = 42804]
4. Phosgene
[Option ID = 42805]
Correct Answer :
Phosgene
[Option ID = 42805]
86) Which of the following atmospheric phenomenon is responsible for the blue colour of the sky during clear sunny days?
[Question ID = 10703]
1. Electromagnetic scattering [Option ID = 42806]
2. Geometric scattering [Option ID = 42807]
3. Mie scattering [Option ID = 42808]
4. Rayleigh scattering [Option ID = 42809]
Correct Answer :
Rayleigh scattering [Option ID = 42809]
87) Blue baby syndrome is caused by contamination from which of the following chemical substances?
[Question ID = 10704]
1. Ammonia [Option ID = 42810]
2. Fluoride [Option ID = 42811]
3. Mercury [Option ID = 42812]
4. Nitrates [Option ID = 42813]
Correct Answer :
Nitrates [Option ID = 42813]
88) Ant bites are rich in which of the following acids?
[Question ID = 10705]
1. Formic acid [Option ID = 42814]
2. Hydrochloric acid [Option ID = 42815]
3. Tartaric acid [Option ID = 42816]
4. Trifluoromethanesulfonic acid [Option ID = 42817]
Correct Answer :
Formic acid [Option ID = 42814]
89) Which of the following is not a food preservation technique?
[Question ID = 10706]
1. Curing
[Option ID = 42818]
2. Jellying
[Option ID = 42819]
3. Irradiation
[Option ID = 42820]
4. Oxygenation
[Option ID = 42821]
Correct Answer :
Oxygenation
[Option ID = 42821]
90) Which of the following compounds are generally responsible for the phenomenon of Bioluminescence?
[Question ID = 10707]
1. Cytokinin [Option ID = 42822]
2. Lactiferin [Option ID = 42823]
3. Luciferin [Option ID = 42824]
4. Somatostatin [Option ID = 42825]
Correct Answer :
Luciferin [Option ID = 42824]
91) Which of the following scientists discovered Jumping Genes?
[Question ID = 10708]
1. Alec Jeffreys [Option ID = 42826]
2. Barbara McClintock [Option ID = 42827]
3. Elizabeth Winifred Jones [Option ID = 42828]
4. Har Gobind Khorana [Option ID = 42829]
Correct Answer :
Barbara McClintock [Option ID = 42827]
92) Which type of seed dispersal primarily occurs during the night?
[Question ID = 10709]
1. Anemochory [Option ID = 42830]
2. Chiropterochory [Option ID = 42831]
3. Malacochory [Option ID = 42832]
4. Ornithochory [Option ID = 42833]
Correct Answer :
Chiropterochory [Option ID = 42831]
93) As per the `latitudinal gradient of species diversity', the species richness or biodiversity:
[Question ID = 10710]
1. increases from the poles to the tropics [Option ID = 42834]
2. increases from tropics to the poles [Option ID = 42835]
3. shows patchy pattern with respect to latitude [Option ID = 42836]
4. shows no pattern with respect to latitude [Option ID = 42837]
Correct Answer :
increases from the poles to the tropics [Option ID = 42834]
94) Which among the following is a criterion for a region to be considered as Biodiversity Hotspot?
[Question ID = 10711]
1. It must have at least 1500 vascular plants as endemics [Option ID = 42838]
2. It must have 50% or less of its original natural vegetation [Option ID = 42839]
3. It must have at least 1000 endemic vascular plant species [Option ID = 42840]
4. It must have all of its known species in the threatened list [Option ID = 42841]
Correct Answer :
It must have at least 1500 vascular plants as endemics [Option ID = 42838]
95) Who proposed the concept of Biodiversity Hotspots?
[Question ID = 10712]
1. A G Tansley [Option ID = 42842]
2. E O Wilson [Option ID = 42843]
3. Norman Myers [Option ID = 42844]
4. Richard Dawkins [Option ID = 42845]
Correct Answer :
Norman Myers [Option ID = 42844]
96) The branch of biology that specifically deals with the study of amphibians is known as:
[Question ID = 10713]
1. Batrachology [Option ID = 42846]
2. Herpetology [Option ID = 42847]
3. Ichthyology [Option ID = 42848]
4. Mycology [Option ID = 42849]
Correct Answer :
Batrachology [Option ID = 42846]
97) Which among the following represents living fossils?
[Question ID = 10714]
1. Ctenophores
[Option ID = 42850]
2. Ginkgo biloba
[Option ID = 42851]
3. Horseshoe Crabs
[Option ID = 42852]
4. All of these
[Option ID = 42853]
Correct Answer :
All of these
[Option ID = 42853]
98) During ecological succession, a kselected population tends to dominate in:
[Question ID = 10715]
1. early stages
[Option ID = 42854]
2. pioneer stages
[Option ID = 42855]
3. mature stages
[Option ID = 42856]
4. seral stages
[Option ID = 42857]
Correct Answer :
mature stages
[Option ID = 42856]
99) Aerial roots are not found in which of the following plant/tree?
[Question ID = 10716]
1. Avicennia germinans
[Option ID = 42858]
2. Rhizophora mangle
[Option ID = 42859]
3. Ficus benghalensis
[Option ID = 42860]
4. Daucus carota
[Option ID = 42861]
Correct Answer :
Daucus carota
[Option ID = 42861]
100) Liontailed macaques and Malabar pied hornbills are only found in the evergreen forests of Western Ghats. Such
species are called:
[Question ID = 10717]
1. Endemic [Option ID = 42862]
2. Restricted [Option ID = 42863]
3. Survivors [Option ID = 42864]
4. Threatened [Option ID = 42865]
Correct Answer :
Endemic [Option ID = 42862]
This post was last modified on 27 December 2020