New world Monkey lacks

Options

A. Tail
B. Cheek pouches
C. Ischial callosities
D. Both B and C .

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks what characteristics are lacking in New World monkeys. We need to evaluate each option provided.

2. **Evaluate Option 1 - Tail**:
- New World monkeys, like all monkeys, possess tails. Tails are a characteristic feature of monkeys and are used for balance and hanging in trees.
- **Conclusion**: This option is incorrect as New World monkeys have tails.

3. **Evaluate Option 2 - Cheek Pouches**:
- Cheek pouches are specialized structures found in some primates that allow them to store food temporarily. New World monkeys do not have cheek pouches.
- **Conclusion**: This option is correct as New World monkeys lack cheek pouches.

4. **Evaluate Option 3 - Ischial Callosities**:
- Ischial callosities are thickened pads of skin found on the ischium (part of the hip bone) that provide comfort when sitting. These structures are typically found in Old World monkeys and apes, but not in New World monkeys.
- **Conclusion**: This option is also correct as New World monkeys lack ischial callosities.

5. **Evaluate Option 4 - Both B and C**:
- Since both cheek pouches (Option 2) and ischial callosities (Option 3) are absent in New World monkeys, this option is correct.
- **Conclusion**: The correct answer is Option 4, which states that both B (cheek pouches) and C (ischial callosities) are absent in New World monkeys.

**Final Answer**: The correct answer is Option 4 - both B and C.

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