Which of the following group represents minimum species diversity among vertebrates?

Options

A. Birds
B. Mammals
C. Reptiles
D. Amphibians

Answer

To determine which group represents minimum species diversity among vertebrates, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Groups**: The question provides four groups of vertebrates: birds, mammals, reptiles, and amphibians.

2. **Understand Vertebrate Classification**: Vertebrates are classified into five main classes:
- Fish
- Amphibians
- Reptiles
- Birds
- Mammals

3. **Assess Species Diversity**: We need to evaluate the species diversity within these groups:
- **Fishes** have the highest species diversity among vertebrates.
- **Birds** come next with a significant number of species.
- **Reptiles** have a moderate level of diversity.
- **Amphibians** have fewer species compared to the above groups.
- **Mammals** have the least species diversity among the listed groups.

4. **Conclusion**: Based on the analysis, mammals represent the group with the minimum species diversity among vertebrates.

5. **Final Answer**: The correct answer is **mammals** (Option 2).