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Biology : Biodiversity and Conservation

Long Answer Type

51. What kinds of threats to the biodiversity may lead to its loss ?

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Short Answer Type

52. Name the two basic methods of conservation of biodiversity..

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Long Answer Type

53. Explain the following :

(Ð°) IUCN Red List

(b) Protected areas.

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One Word Answers

54. What is the total number of hotspots in the world?

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Short Answer Type

55.

Using a chart show the in situ and ex situ approaches of conserving biodiversity in India.

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56. How can we preserve threatened species of plants..

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57. Write critical notes on the following :

(i) Hot spots of biodiversity

(ii) Ex situ conservation

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58.

Give three hypotheses for explaining why tropics show greatest levels of species richness.

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59. Amazonian rain forest has the greatest biodiversity on earth. List any two hypotheses that are proposed by the biologists to account for the greater biological diversity.

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60. Among the ecosystem services are control of floods and soil erosion. How is this achieved by the biotic components of the ecosystem ?

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