SSC Ecology And Environment Sample Paper NCERT Sample Paper-3

  • question_answer
    'Hot spots' of biodiversity means

    A)  Spots of maximum poaching on earth

    B)  Richest and most threatened reservoir of plant and animal life on earth

    C)  Spots of maximum exotic species

    D)  all of these

    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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