DUET 2019 PhD in Environmental Studies Previous Queston Papers

Firstranker's choice

FirstRanker.com

DU PhD in Environmental Studies

--- Content provided by​ FirstRanker.com ---

1. 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]

--- Content provided by⁠ FirstRanker.com ---

2. Which of the following correctly represents the inflection point in a population growth curve? [Question ID = 12653]
   1. 2xK [Option ID = 20611]
   2. K/2 [Option ID = 20610]
   3. K [Option ID = 20609]
   4. 3xK [Option ID = 20612]

--- Content provided by‍ FirstRanker.com ---

3. 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]

--- Content provided by‌ FirstRanker.com ---

4. 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]
   2. Allen telescope array [Option ID = 20636]
   3. Hubble telescope [Option ID = 20635]
   4. New horizon telescope [Option ID = 20633]

--- Content provided by‌ FirstRanker.com ---

5. 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]

--- Content provided by‍ FirstRanker.com ---

6. 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]

--- Content provided by⁠ FirstRanker.com ---

7. 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]

--- Content provided by⁠ FirstRanker.com ---

8. 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]
   4. High, small, small, and short [Option ID = 20517]

--- Content provided by FirstRanker.com ---

9. 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]

--- Content provided by‌ FirstRanker.com ---

10. 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]

--- Content provided by‌ FirstRanker.com ---

11. 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]

--- Content provided by‍ FirstRanker.com ---

12. 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]

--- Content provided by‌ FirstRanker.com ---

13. 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]

--- Content provided by FirstRanker.com ---

14. 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]

--- Content provided by FirstRanker.com ---

15. The Folin-Ciocalteu method is used for determination of [Question ID = 12648]
    1. Nitrate content [Option ID = 20590]
    2. Phosphate content [Option ID = 20591]
    3. Organic carbon content [Option ID = 20589]
    4. Total phenolic content [Option ID = 20592]

--- Content provided by‍ FirstRanker.com ---

16. 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]

--- Content provided by FirstRanker.com ---

17. A range of measurements which includes the middle 50% of the measurements or observations in a sample, bounded by the lowest value of the 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]

--- Content provided by⁠ FirstRanker.com ---

18. 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]

--- Content provided by‍ FirstRanker.com ---

19. A community of species whose niches complement one another is more efficient in its use of resource than an equivalent set of monocultures [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]

--- Content provided by‍ FirstRanker.com ---

20. 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]

--- Content provided by⁠ FirstRanker.com ---

21. 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]

--- Content provided by‍ FirstRanker.com ---

22. 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]

--- Content provided by‌ FirstRanker.com ---

23. 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]

--- Content provided by‍ FirstRanker.com ---

24. 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]

--- Content provided by‌ FirstRanker.com ---

25. When a mixture of Azospirillum, Azotobacter, and Bacillus was applied to rhizosphere, fixation of atmospheric nitrogen increased. This was due [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]

--- Content provided by‍ FirstRanker.com ---

26. 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]

--- Content provided by‍ FirstRanker.com ---

27. 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]

--- Content provided by‍ FirstRanker.com ---

28. 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]

--- Content provided by⁠ FirstRanker.com ---

29. "Complete competitors cannot coexist" is true for [Question ID = 12632]
    1. Primary succession [Option ID = 20525]
    2. Character displacement [Option ID = 20528]
    3. Secondary succession [Option ID = 20526]
    4. Competitive exclusion [Option ID = 20527]

--- Content provided by FirstRanker.com ---

30. 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]

--- Content provided by FirstRanker.com ---

31. 'Naturalization-invasion continuum' which conceptualizes the various barriers that a plant must overcome to become alien, casual, naturalized, [Question ID = 12627]
    1. Lambers and Poorter, 1999 [Option ID = 20507]
    2. Zhou, 2013 [Option ID = 20508]
    3. Richardson and Pyšek, 2006 [Option ID = 20505]
    4. Simberloff et al., 2012 [Option ID = 20506]

--- Content provided by​ FirstRanker.com ---

32. 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]

--- Content provided by‌ FirstRanker.com ---

33. 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]

--- Content provided by‌ FirstRanker.com ---

34. 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]

--- Content provided by⁠ FirstRanker.com ---

35. "Program MARK" is a popular software used to analyze a variety of ecological data pertaining to breeding success, population size, etc. The und [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]

--- Content provided by⁠ FirstRanker.com ---

36. 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]

--- Content provided by‍ FirstRanker.com ---

37. 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]

--- Content provided by⁠ FirstRanker.com ---

38. Species are put into groups and then groups are arranged into hierarchies to form a tree like arrangement called dendrogram for the hierarchica 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]

--- Content provided by‌ FirstRanker.com ---

39. 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, Hob [Option ID = 20620]
    4. H1a, H1b [Option ID = 20619]

--- Content provided by⁠ FirstRanker.com ---

40. 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]

--- Content provided by‌ FirstRanker.com ---

41. ..is a measure of area of biologically productive land or sea required to produce food, material, and energy. [Question ID = 12
    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]

--- Content provided by⁠ FirstRanker.com ---

42. 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]

--- Content provided by‍ FirstRanker.com ---

43. 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]

--- Content provided by​ FirstRanker.com ---

44. 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]

--- Content provided by​ FirstRanker.com ---

45. 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]

--- Content provided by​ FirstRanker.com ---

46. 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]
    2. An act of betrayal [Option ID = 20641]
    3. An act of selfishness [Option ID = 20642]
    4. An act of utilitarianism [Option ID = 20644]

--- Content provided by‌ FirstRanker.com ---

47. 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]

--- Content provided by​ FirstRanker.com ---

48. 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]

--- Content provided by​ FirstRanker.com ---

49. 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]

--- Content provided by‍ FirstRanker.com ---

50. 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]
    4. Laos [Option ID = 20629]

--- Content provided by‌ FirstRanker.com ---