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Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 6 (60 MCQs)

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1. What are the main threats to biodiversity?
2. Lacking this type of diversity can lead to a population being largely depleted due to the increased chance of inheriting genetic diseases?
3. A treaty is a(n)
4. Which of the following are one of the Broadly Utilitarian arguments to conserve Biodiversity?
5. The increased concentration of toxic substances in organisms at a high trophic level in the food chain
6. Overexploitation was once the main cause of what?
7. When a large percentage of all living species become extinct in a relatively short period of time.
8. What is NOT factor that threatens biodiversity?
9. What type of species appear last, after soil is deepened and enriched with nutrients by cycles of growth and death by early & mid successional species?
10. Introduction of Parthenium lead to the extinction of some indigenous species of plants. This is an example of
11. The disappearance of a particular population from a given area, but not of the entire species globally, is called
12. It is one of the 3 levels of biodiversity that refers to the total number of plants, animals, and insect species that can be found in a particular region
13. A species is at serious risk of extinction.
14. What is the role of biodiversity in nutrient recycling?
15. An ecosystem with ..... biodiversity can collapse if there is a change.
16. Using resources at a rate at which they can be replaced or recycled while preserving long term environmental health
17. Which region has the greatest biodiversity on earth according to the passage?
18. How can pollution affect ecosystems?
19. What is the primary goal of biodiversity conservation?
20. What is the ecological importance of biodiversity?
21. What does the term 'biodiversity' encompass?
22. What is a 1972 act to protect declining populations of marine mammals-prohibits the killing of all marine mammals in the US and prohibits the import/export of any marine mammal body parts (polar bears, sea otters, manatees, CA sea lions)?
23. Which animal is considered endangered?
24. What is the role of bees in the ecosystem?
25. What is the name for people who categorize organisms and give them their scientific names?
26. ..... includes thing like minerals, fossil fuels, plants, animals, clean water, and solar energy.
27. How many species are estimated to be on earth according to the passage?
28. Term Biodiversity was popularized by
29. At the international level, the United Nations has facilitated several ..... to promote biodiversity.
30. Which of the following have greater amphibian species diversity than the others?
31. What is a series of predictable stages of growth that a forest goes through-starting with bare rock?
32. Which type of organism dwarfs all others in terms of species diversity?
33. What is the edge effect?
34. Among the animal groups given below, which one has the highest percentage of endangered species?
35. Involves adding natural predators to a degraded ecosystem.
36. Which applies to this environmental problem:Humans produce an excessive amount of artificial light which can interfere with natural cycles of light/dark in an environment and can confuse animals.
37. What is habitat fragmentation?
38. What is the role of zoos in conservation?
39. Which type of organism is HIGHEST in terms of species diversity?
40. An example of animal cruelty is .....
41. What is the taxonomic/scientific name for tigers?
42. What is the number of different habitats available in a given area?
43. What is the purpose of biodiversity monitoring?
44. What is a US law giving USFWS power to designate species as endangered or threatened, monitor trade, and purchase land critical to these species' habitats?
45. According to most scientists, what is the ultimate cause of most mass extinctions?
46. Global warming can significantly be controlled by .....
47. Which biome has less than 25cm of rain each year?
48. How can humans best help an endangered species avoid extinction?
49. All different kinds of life you'll find in one area the variety of animals, plants, fungi and even microorganisms like bacteria that make up our natural world.
50. ..... the variety of organisms in a given area, the genetic variation within a population, the variety of species in a community or the variety of communities in an ecosystem.
51. Found only in specific geographic area.
52. Which applies to this environmental problem:The zebra mussel is outcompeting native species and causing damage in the Missouri River.
53. These are organisms that originated and live in an area without any human intervention
54. What is a long-term consequence of threats to biodiversity?
55. Which threat to biodiversity is the number one cause of loss of biodiversity?
56. These are organisms that can signal a change in the biological condition of a particular ecosystem, and thus may be used to diagnose the health of an ecosystem.
57. Another form of pollution that destroys underwater habitats for fish and other species.
58. Amongst the animal groups given below, which one has the highest percentage of endangered species
59. Explain how the introduction of invasive species can lead to a decline in native biodiversity.
60. The complete disappearance of a species when its last member dies.
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