SSC Ecology And Environment Sample Paper NCERT Sample Paper-4

  • question_answer
    Hot spots are characterized by

    A)  Their location

    B)  Number of endemic species with extent of threat to them

    C)  Developing and developed countries

    D)  All above

    Correct Answer: B

    Solution :

    [b] A biodiversity hotspot is a region with a significant reservoir of biodiversity that is under threat from humans. To qualify as a biodiversity hotspot on Myers 2000 edition of the hotspot-map, a region must meet two strict criteria: it must contain at least 0.5% or 1,500 species of vascular plants as endemics, and it has to have lost at least 70% of its primary vegetation. Around the world, 25 areas qualify under this definition, with nine others possible candidates. 3 regions that satisfy these criteria exist in India and they are: The Western Ghats and Sri Lanka, The Eastern Himalayas and Indo-Burma.

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