Assertion :Diversity observed in an entire geographical area, is called gamma diversity. Reason: Biodiversity decreases from high altitudes to low altitudes.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
A) The diversity present in the ranges of communities in an entire geographical area is known as Gamma diversity. The term was introduced by R. H. Whittaker. Also, gamma diversity = alpha diversity x Beta diversity.
B) Biodiversity increases from high altitudes to low altitudes. As the favorable conditions for the species richness decrease at high altitudes.
So, the correct answer is 'Assertion is correct but Reason is incorrect'.

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