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Standard XII
Biology
Question

An area is declared as 'hot spot' when
  1. it has 1500 or more endemic species and 75% of its orginal habitat is lost
  2. it has 1500 or more vertebrate species and 75% its original habitat is lost
  3. it has more than 2000 species of plants
  4. most of the species inhabiting the area are facing the risk of extinction.

A
it has 1500 or more endemic species and 75% of its orginal habitat is lost
B
it has more than 2000 species of plants
C
most of the species inhabiting the area are facing the risk of extinction.
D
it has 1500 or more vertebrate species and 75% its original habitat is lost
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Solution
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Hotspot of biodiversity are the areas which have a high density of biodiversity or megadiversity which are the most threatened points.
All over the world, 25 terrestrial hotspots have been identified for the conservation of biodiversity. Out of these 15 hotspots have the tropical forest, 5 acres and mediterian time zones and 9 hotspots are present in tropics.
Out of 25 hotspots of the world tour found in India. These are the Western Ghats and the eastern Himalayas. Norman Myers developed the hotspot concept in 1988. The hotspot is the richest and the most threatened is organised of plant and animal life on earth.
Biological hotspot at the area that has a high density of biodiversity which is also the most threatened ones.
This area so high degree of endemism and are inhabited by a wide variety of flora and fauna.

So, the correct option is 'it has 1500 or more endemic species and 75% of its orginal habitat is lost'

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