Question

Assertion : Diversity observed in the entire geographical area is called as gamma diversity.
Reason : Biodiversity decreases from high altitude to low altitude.

• A. Both the Assertion and the Reason are true and the Reason is a correct explanation of the Assertion.
• B. Both the Assertion and the Reason are true but the Reason is not a correct explanation of the Assertion.
• C. The Assertion is true but the Reason is false
• D. Both the Assertion and Reason are false.
• E. The Assertion is false but Reason is true.

Answer 1

The correct option is C The Assertion is true but the Reason is false

Community and ecosystem diversity is of three types- alpha, beta and gamma.

Alpha diversity is the species diversity in a given community or habitat, alpha diversity is dependent upon species richness and evenness or equitability.

Beta diversity is biodiversity, which appears in a range of communities due to the replacement of species with the change in community or habitat due to the presence of different micro-habitats, niches and difference in environment conditions.

Gamma diversity is diversity present in ranges of communities as represented by the diversity of habitats or ecosystems over a total landscape or geographical area.
Biodiversity is not uniform on the Earth. It varies with the change in latitude or altitude.

Biodiversity increase, when we move from high to low latitude (i.e., from the poles to the equator)

Thus, the correct answer is option C.