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Biodiversity and Conservation

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CBSE Gujarat Board Haryana Board

## Previous Year Papers

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Class 10 Class 12

Which one of the following is not observed in biodiversity hot spots?

• Endemism

• Accelerated species loss

• Lesser interspecific competition

• species richness

C.

Lesser interspecific competition

Hot spots are areas that are extremely rich in species diversity, have high endemism and are under constant threat. The key criteria for determining a hot spot are a number of endemic species, and degree of threat, which is measured in terms of habitat globally with an approximate area of 1.4%. Among the 25 hot spots, 2 are found in India, ie, Western Ghat and Eastern Himalayas. These areas are particularly rich in floral wealth and endemism not only in flowering plants but also in reptiles, amphibians, swallow-tailed butterflies and some mammals.

Hot spots are areas that are extremely rich in species diversity, have high endemism and are under constant threat. The key criteria for determining a hot spot are a number of endemic species, and degree of threat, which is measured in terms of habitat globally with an approximate area of 1.4%. Among the 25 hot spots, 2 are found in India, ie, Western Ghat and Eastern Himalayas. These areas are particularly rich in floral wealth and endemism not only in flowering plants but also in reptiles, amphibians, swallow-tailed butterflies and some mammals.

377 Views

Number of Biosphere reserves in India is :
• 143
• 90
• 180
• 448

B.

90
987 Views

What are the species confined to a region and not found anywhere else called?
• Endangered
• extinct
• Sacred
• Endemic

D.

Endemic
916 Views

Animals constitute what % of the total species of organisms (plants and animals) recorded so far ?
• 7%
• 70%
• 17%
• 8%

B.

70%
781 Views

According to the IUCN (2004), the total number of plant and animal species described so far is slightly more than :
• 1.5 million
• 15 million
• 150 million
• 1500 million

A.

1.5 million
1066 Views

The number of national parks in India is :
• 56
• 66
• 90
• 448

C.

90
1323 Views