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The statements given below indicate key characteristics of a geographical region.A. Contains at least 1500 species of endemic animalsB. Contains at le
Question

The statements given below indicate key characteristics of a geographical region.

  • A. Contains at least 1500 species of endemic animals

  • B. Contains at least 1500 species of endemic vascular plants

  • C. Has lost 70% of its original natural vegetation

  • D. Has lost 30% of its original natural vegetation

Which one of the following combinations represents the correct criteria for declaring an area as a biodiversity hotspot?

A.

A and C

B.

B and C

C.

A and D

D.

B and D

Correct option is B

A biodiversity hotspot is a region that meets two specific criteria established by Conservation International to be designated as a "hotspot." These criteria are:

  1. Endemism Criterion: The region must contain at least 1500 species of endemic vascular plants. This means that the region must have a large number of plant species that are found nowhere else in the world.

  2. Threat Criterion: The region must have lost at least 70% of its original natural vegetation. This indicates that the area has been severely impacted by human activity or environmental degradation, making it critical for conservation efforts.  

    Explanation of each Statement:

  1. Statement A: Contains at least 1500 species of endemic animals
    This statement is incorrect for a biodiversity hotspot. While the presence of endemic animals is important, the primary criterion for a hotspot is the presence of endemic vascular plants (not animals). The 1500 species of endemic vascular plants is the correct criterion for a biodiversity hotspot, not endemic animals.

  2. Statement B: Contains at least 1500 species of endemic vascular plants
    This statement is correct. As per the criteria for a biodiversity hotspot, a region must have at least 1500 species of endemic vascular plants. This is one of the key defining features of a biodiversity hotspot.

  3. Statement C: Has lost 70% of its original natural vegetation
    This statement is correct. A region must have lost at least 70% of its original natural vegetation to be considered a biodiversity hotspot. This significant loss indicates the region is under great environmental stress, which is a key characteristic of hotspots.

  4. Statement D: Has lost 30% of its original natural vegetation
    This statement is incorrect. The criterion for a biodiversity hotspot is that the region must have lost at least 70% of its original natural vegetation, not just 30%. Losing 30% does not qualify a region as a hotspot by the official definition.

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