Baboon differs from old world monkeys in

Options

A. Presence of tail
B. Absence of ischial callosities
C. Absence of cheek pouches
D. Both B and C .

Answer

To answer the question regarding how baboons differ from old world monkeys, we can break down the information as follows:

1. **Understanding the Types of Monkeys**:
- Old World monkeys include species like baboons, macaques, and others that are primarily found in Africa and Asia. They have specific anatomical features that distinguish them from New World monkeys.

2. **Key Differences**:
- **Presence of Tail**: Old World monkeys, including baboons, typically have tails, but they are not prehensile. In contrast, New World monkeys often have prehensile tails.
- **Ischial Callosities**: These are the thickened areas of skin on the buttocks of some primates. Baboons possess ischial callosities, which are characteristic of Old World monkeys.
- **Cheek Pouches**: Baboons have cheek pouches that they use to store food, a feature that is not present in all Old World monkeys.

3. **Analyzing the Options**:
- **Option A (Presence of Tail)**: This is not a distinguishing feature since both baboons and Old World monkeys have tails.
- **Option B (Absence of Ischial Callosities)**: This is incorrect as baboons do have ischial callosities.
- **Option C (Absence of Cheek Pouches)**: This is also incorrect because baboons do have cheek pouches.
- **Option D (Both B and C)**: Since both statements B and C are incorrect, this option is also not valid.

4. **Conclusion**:
- The correct answer is that baboons differ from other Old World monkeys primarily in their specific adaptations and features, but the options provided do not accurately reflect the differences.

**Final Answer**: The baboon differs from Old World monkeys in that it has specific adaptations like cheek pouches, but the options provided in the question do not correctly highlight these differences.