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Biodiversity and Conservation

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Which one of the following ecosystem types has the highest annual net primary productivity?

  • Tropical rain forest

  • Tropical deciduous forest

  • Temperate evergreen forest

  • Temperate deciduous forest


A.

Tropical rain forest

Productivity of tropical rainforest is highest. The tropical rain forest covering 300,000 km2 area. They contain more than 50% of total flora and fauna of the world.

Productivity of tropical rainforest is highest. The tropical rain forest covering 300,000 km2 area. They contain more than 50% of total flora and fauna of the world.

456 Views . 3 Shares

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 . 5 Shares

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

B.

70%
781 Views . 7 Shares

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

B.

90
987 Views . 9 Shares

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

D.

Endemic
916 Views . 9 Shares

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

C.

90
1323 Views . 4 Shares

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