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Class 12 Biology Chapter 15 Biodiversity And Conservation Quiz 9 (60 MCQs)

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1. Which of the following is an index used to calculate richness and evenness to measure biodiversity?
2. Which is more likely to become endangered?
3. When the value of regression coefficient z lies in the range of 0.6 to 1.2, we will find, the slope of the line to be .....
4. Propose a strategy to mitigate the effects of habitat fragmentation on biodiversity.
5. Which is referred to as Lungs of the Planet Earth'?
6. Humans are causing extiction in which ways?
7. A temporary change in environmental conditions that causes a pronounced change in an ecosystem
8. ..... is the gradual process of species becoming extinct.
9. All living and nonliving things in an environment and the many ways they interact are called .....
10. Which of the following is a major threat to biodiversity?
11. The human diet has been enriched with native food products such as sweet potatoes, beans, tomatoes and corn that come from
12. What impact does climate change have on species?
13. Which of the following is most important cause of animals and plants being driven to extinction
14. Which would be a direct effect caused by habitat fragmentation?
15. The species-area relationship on a logarithmic scale (logscale) is
16. IUCN stands for:
17. The killing of animals for use of most of its body, including food, leather (skin), fur, etc.
18. Find out the correct option w.r.t. number of plant and animal species recorded in India.
19. The gradual process of species becoming extinct is known as:
20. The type of hunting that threatens species survival the most is
21. Western ghats have a greater number of amphibian species than the Eastern ghats. What kind of diversity does it represent?
22. The number of different species and the abundance of each species in a biological community.
23. What is ecological restoration?
24. What is the main goal of conservation efforts?
25. Biodiversity varies along a latitudinal gradient. Where do we see the most biodiversity?
26. Define genetic diversity
27. List three major threats to biodiversity.
28. What is a primary threat to biodiversity?
29. All of the materials and organisms found in the biosphere, including minerals, fossil fuels, plants, and animals
30. Define species diversity and provide an example of a species-rich ecosystem.
31. How does reforestation help biodiversity?
32. Among some of the recent extinctions, Thylacine is from which of the following places?
33. Which product is often derived from the natural environment?
34. What is the difference between threatened and endangered species?
35. There are holm oak trees all over this region
36. The easiest component of biodiversity to measure is
37. Which of the following group exhibit more species diversity
38. The natural extinction rate
39. Among the ecosystem mentioned below where can one find maximum biodiversity
40. Excessive use of species for economic value
41. What is the main cause of extinction today?
42. Type of biodiversity that refers to the variety of habitats, communities, and ecological processes within and between ecosystems:
43. Which of these is NOT a factor that makes a better nature reserve?
44. What is an international treaty (1990)-to help protect biodiversity 3 objectives-conserve biodiversity, sustainably use biodiversity, and equitably share the benefits from commercial use of genetic resources (pharmaceutical drugs)?
45. If we accept May's global estimates. then the totalspecies that have been recorded so far are about
46. The process of subruction
47. The 3 different types of biodiversity (in IB ESS) are;
48. Tigers living in warm climates have thinner coats of fur than tigers living in cool climates. This is a result of
49. The variety of ecosystems present in the biosphere is called:
50. When nations ratify a ..... , they promise to uphold the laws that are described.
51. What is an international agreement for countries to set up agencies to monitor import and export of endangered species (as specified by IUCN Red List)?
52. How does biological augmentation help ecosystems?
53. Why are tigers considered endangered?
54. What is climate change primarily caused by?
55. Which is an example of bioremediation?
56. The Endangered Specie Act gives legal protection to species that are in danger or becoming extinct.
57. The cheetah population was around 100, 000 in 1900. Today fewer than 12, 000 cheetahs remain. What type of natural resource are cheetahs considered to be?
58. Some species are very rare and can be found in a particular ecosystem, these species are called .....
59. Which of the following is characterised by presence of less seasonal variations?
60. The relation between species richness and area is described On a logarithmic scale by the equation (where S = species Richness, A = area, Z = slope of the line (regressionCoefficient), C = Y-intercept)
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