Why have certain regions been declared as biodiversity ' hot spots' by environmentalist of the wpold? Name any two hot spot regions of india.

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(a)

Why should biodiversity be conserved? List any two eithical arguments in its support.

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(a)

Justify with the help of an example where a deliberate attempt by humans has led to the extinction of a particular species.

2

(a)

The species diversity of plants (22 per cent) is much less than that of animals (72 per cent). What could be the explanations to how animals achieved grater diversification?

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(a)

Can you think of a situation where we deliberately want to make a species extinct? How would you justify it?

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(a)

When and where was Earth Summit held? What was its objective?

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(a)

List any two major causes other than anthropogenic causes of the loss of biodiversity.

2

(a)

What are sacred groves? Discuss their role in biodiversity conservation.

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(a)

Broadly classify the extinction processes. 

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(a)

What are three major threat categories of species? Give example.

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(a)

Biodiversity decreases as one move from equator towards pole. Justify this statement with a suitable example.

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(a)

Name a scientist who proposed that species richness increases with increased explored area but only up to a limit. What is the shape of a graph if species richness is plotted against area for a wide variety of taxa.

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(a)

If a spices of fish becomes extinct, all those parasites, specific to that fish also face extinction. Which of the major cause describe as the evil Quintet’s is being accounted?

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(a)