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Biodiversity and Conservation

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Class 10 Class 12

Which one of the following is one of the cahracteristics of a biological community?

• Stratification

• Natality

• Mortality

• Sex- ratio

A.

Stratification

Stratification is the characteristic of the biological community. Stratification is the vertical layering or the phenomenon of having more than one stratum including formed by different plants/ organisms in the same place. A forest may have 5-7 state including large or canopy trees, medium trees, short trees, shrubs, herbs, ground flora etc. Stratification is useful as it can accommodate a large number of organisms of different types and more efficient use of resources. The animals that occupy such similar strata or ecological niches although geographically separated are called ecological equivalents

Stratification is the characteristic of the biological community. Stratification is the vertical layering or the phenomenon of having more than one stratum including formed by different plants/ organisms in the same place. A forest may have 5-7 state including large or canopy trees, medium trees, short trees, shrubs, herbs, ground flora etc. Stratification is useful as it can accommodate a large number of organisms of different types and more efficient use of resources. The animals that occupy such similar strata or ecological niches although geographically separated are called ecological equivalents

468 Views

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

B.

70%
781 Views

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

C.

90
1323 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

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

D.

Endemic
916 Views

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

B.

90
987 Views