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Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 3 (60 MCQs)

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1. Most scientists agree that cloning provides much help to prevent biodiversity loss.
2. Which term best describes the progression from sophomore year $\rightarrow$ junior year $\rightarrow$ senior year?
3. What do the 3 R's stand for?
4. Clearing of a region that wipes out a habitat
5. What role do invasive species play in the loss of biodiversity?
6. All of the following are causes for biodiversity loss, EXCEPT:
7. Forest clearing, farming, and road building are all examples of
8. How many mega diversity countries are there in the world, and is India one of them?
9. What is overfishing?
10. A stable ecosystem typically has high biodiversity.
11. A species of organism disappearing from the biosphere
12. The increased insatiable demand for resources results to land use changes hence the loss of genetic diversity. Species reduction, increased ecosystem changes such as random population changes, and disease outcrop habitat fragmentation result in biodiversity losses.
13. Use Low Flush Toilets, Water Plant If Needed and Pay Attention to Leaky Taps are examples of .....
14. What is a biodiversity hotspot?
15. True or False:If bees were to go extinct, there would be a big impact on humans since bees pollinate our crops.
16. What level of biodiversity is most commonly equated with the overall concept of biodiversity?
17. Number of different species living in a specific area.
18. What is biological magnification?
19. Which are most likely to become invasive?
20. The significance of the slope of regression in a species-area relationship is:
21. When organisms mate with closely related family members resulting in a higher chance of offspring having harmful genetic mutations
22. What is a new trait that increases an organism's fitness (ability to survive and reproduce)?
23. Fill in the blank:The historic Convention on Biological Diversity ('The Earth Summit') was held in ..... in 1992.
24. High levels of biodiversity tend to
25. Which one of the following is not a method of in situ conservation of biodiversity
26. Reasons for preserving biodiversity include all of the following except
27. How can zoos, botanic gardens, and wildlife parks help save species?
28. Explain the concept of ecological balance in relation to biodiversity.
29. Which of the following is an example of a conservation effort?
30. It happens when the ecosystem is healthy because there is a balance between living and non-living things.
31. Which of the following is not a cause for loss of biodiversity
32. What is the affect of species diversity, as one moves from high to low altitudes.
33. Which of the following is a potential downside to including corridors in reserve design?
34. The cause / causes for species richness of tropics is / are
35. How do community efforts contribute to conservation?
36. What is the likely consequence of the isolation of a land mass due to crustal plate movement?
37. Which of the is NOT a component of biodiversity?
38. A method of using living things, such as bacteria, plants, or fungi, to remove toxins from a polluted area
39. What is the "Tragedy of the Commons" in the context of environmental science?
40. Which biome contains large populations of grazing herbivores, few species of birds, and deep, rich soil?
41. The IUCN (International Union for Conservation of NatureAnd Natural Resources) has head quarters in:
42. What else could low biodiversity mean?
43. This animal eats hervibores, wild boars and rabbits.
44. The current rate of species extinction is
45. Increasing concentration of toxic substances, such as DDT, in organisms as trophic levels increase in food chains or food webs.
46. The plants and animals of Australia had a unique evolution because the tectonic plate on which the continent is situated
47. About tbe total number of species present on earth, amore conservative and scientifically sound estimate wasmade by
48. What does conservation involve?
49. Which one of the following is an example of a "common" .
50. What conservation effort consists of genetically copying organisms to increase the population size
51. Chemicals from burning fossil fuels mix with the precipitation
52. An ecologist uses the term biodiversity for the variety of species of
53. What is the study of ecological relationships and community structure on islands?
54. Sacred groves are found in Khasi and Jaintia Hills in Meghalaya, Aravalli Hills of Rajasthan, and Western Ghats regions of Karnataka and Maharashtra.
55. There is a gradual process of extinction of species known as background extinction.
56. Which is an example of an aesthetic justification for conservation?
57. Column I ..... Column III.Dodo ..... (A) RauwolfiaII.Reserpine ..... (B)MauritiusIII. Botanical gardens ..... (C) Khasi and Jaintia hills.IV. Sacred forests ..... (D) Ex-situ conservation
58. At a constructive plate margin
59. A diversity index of an ecosystem typically takes into account
60. Biodiversity is important for ecosystem functioning because it:
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