Which mouth part occurs in female Anopheles but absent in males?

Options

A. Proboscis
B. Mandibles
C. Antennae
D. Maxillae

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which mouth part is present in female Anopheles mosquitoes but absent in males.

2. **Identifying the Options**: The options given are:
- A) Proboscis
- B) Mandibles
- C) Antennae
- D) Maxillae

3. **Analyzing the Mouth Parts**:
- **Proboscis**: This structure is present in both male and female Anopheles mosquitoes. It is used for feeding.
- **Mandibles**: In female Anopheles, mandibles are present and form part of the mouthparts, while in males, mandibles are absent.
- **Antennae**: These are sensory organs present in both males and females.
- **Maxillae**: These are also present in both male and female Anopheles mosquitoes.

4. **Conclusion**: Since the mandibles are the only mouth part that is present in females but absent in males, the correct answer is **B) Mandibles**.

5. **Final Answer**: The mouth part that occurs in female Anopheles but is absent in males is the **mandibles**.

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