| Consider the following statements regarding the extent of biodiversity. |
| 1. Gamma diversity represents the geographic scale species diversity. |
| 2. Alpha diversity compares the diversity between ecosystems. |
| 3. Beta diversity represents the species richness in a particular ecosystem. |
| Which of the statement(s) given above is/are correct? |
A) Only 1
B) 1 and 3
C) 1 and 3
D) 1 and 2
Correct Answer: A
Solution :
[a] The extent of biodiversity is measured in the following terms Alpha Diversity It refers to the diversity within a particular area or ecosystem. It is usually expressed by the number of species (i.e. species richness) in that ecosystem. Beta Diversity It indicates a comparison of diversity between ecosystems, usually measured as the amount of species change between the ecosystems. Gamma Diversity It is a measure of the overall diversity within a large region i.e. Geographic scale species diversity.
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