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Biology
Biodiversity Conservation Methods
Question

An area is declared as hot spot, when

  1. It has 1500 or more endemic species and 75% of its original habitat is lost.
  2. It has 1500 or more vertebrate species and 75 of its original habitat is lost.
  3. It has more than 2000 species of plants.
  4. Most of the species inhabiting the area is facing the risk of extinction.

A
It has 1500 or more vertebrate species and 75 of its original habitat is lost.
B
It has more than 2000 species of plants.
C
Most of the species inhabiting the area is facing the risk of extinction.
D
It has 1500 or more endemic species and 75% of its original habitat is lost.
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Solution
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The large areas which contain exceptional concentrations of plant endemism and are experiencing very high rates of habitat loss are called ecological hot spots. These are also known as biodiversity hot spots. 2.3% of the Earth's land surface is represented by them. Currently, 36 biodiversity hot spots exist in the world. An area must meet two strict criteria for becoming an ecological hotspot. Contain at least 1,500 species of vascular plants found nowhere else on Earth (known as "endemic" species), Have lost at least 70 percent of its primary native vegetation.
So, the correct answer is 'It has 1500 or more endemic species and 75% of its original habitat is lost.'.

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Similar Questions
Q1
Which of the following two criteria have to be met in order to qualify as a ‘biodiversity hotspot’ on the world hotspots map?Codes:

  1. All of the above
  2. Only 1 and 2
  3. Only 2 and 3
  4. Only 1 and 3
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Q2
A biodiversity hotspot is an area with unusual concentration of species marked by serious threat to its biodiversity by humans. To qualify as a hotspot, a region must meet the following criteria:Which of the above statement(s) is/are correct?
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  3. Both 1 and 2
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Q3
A particular habitat covers an area of 500 sq. km and hosts around 75 different species of organisms. The species richness of this habitat is:
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Q4
The IUCN has declared that the total number of plant and animal species described so far is slightly more than _______.

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Q5
Select the correct term for the following definitions (i, ii, iii, iv).
(i) The taxon is liable to become extinct if not allowed to realise its full biotic potential by providing protection from exotic species/human exploitation/ habitat deterioration/ depletion of food.
(ii) The taxon has been completely eliminated or died out from earth, e.g., Dodo.
(iii) The taxon is facing a high risk of extinction in the wild in the near future due to decrease in its habitat, excessive predation or poaching.
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