Which of the following is incorrectly matched ?

Options

A. Alpha diversity - Number of species in a given habitat
B. Genetic diversity - Variation of genes within species
C. Beta diversity - Diversity of habitat in the whole region
D. Species diversity - The product of species richness and evenness

Answer

To determine which of the following options is incorrectly matched, we need to analyze the definitions of alpha diversity, genetic diversity, beta diversity, and species diversity.

### Step-by-step Solution:

1. **Understanding Alpha Diversity**:
- Alpha diversity refers to the diversity within a particular area or ecosystem, and it is typically measured by the number of species (species richness) in that habitat.
- **Conclusion**: The description of alpha diversity as "number of species in a given habitat" is correct.

2. **Understanding Genetic Diversity**:
- Genetic diversity refers to the variation of genes within a species. It encompasses the differences in DNA among individuals of the same species.
- **Conclusion**: The description of genetic diversity as "variation of gene within the species" is correct.

3. **Understanding Beta Diversity**:
- Beta diversity measures the difference in species diversity between ecosystems or habitats. It acts as a link between alpha diversity (local) and gamma diversity (regional).
- The statement in the question mentions that beta diversity is about the "diversity of habitat in the whole region," which is misleading. Beta diversity compares local communities to regional diversity, not just the whole region.
- **Conclusion**: The description of beta diversity as "diversity of habitat in the whole region" is incorrect.

4. **Understanding Species Diversity**:
- Species diversity is a combination of species richness (the number of different species) and species evenness (the relative abundance of each species).
- **Conclusion**: The description of species diversity as "the product of species richness and evenness" is correct.

### Final Conclusion:
The incorrectly matched option is **beta diversity**, as it is inaccurately described as "diversity of habitat in the whole region."

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