Select the incorrect match w.r.t earthworm.

Options

A. Clitellum - `14^(th`) to `16^(th)` segment
B. Female genital pore - `14^(th`) segment
C. Male genital pore - `18^(th)` segment
D. Pharyngeal nephridia - `7^(th)` and `9^(th)` segment

Answer

To solve the question of selecting the incorrect match with respect to earthworm, we will analyze each option provided:

1. **Clitellum - 14 to 16 segments**:
- The clitellum is indeed found in segments 14 to 16 of the earthworm. It is a thickened, glandular section of the body that plays a crucial role in reproduction by forming a cocoon for the eggs.
- **Conclusion**: This match is correct.

2. **Female genital pore - 14 segment**:
- The female genital pore is located in segment 14 of the earthworm. This is where the female reproductive system opens to the outside.
- **Conclusion**: This match is correct.

3. **Male genital pore - 18th segment**:
- The male genital pore is located in segment 18 of the earthworm. This is where the male reproductive system opens.
- **Conclusion**: This match is correct.

4. **Pharyngeal nephredia - 7th to 9th segment**:
- Pharyngeal nephredia are actually located in segments 4, 5, and 6 of the earthworm, not in segments 7 to 9. Therefore, this information is incorrect.
- **Conclusion**: This match is incorrect.

Based on the analysis, the incorrect match is:
**Option D: Pharyngeal nephredia - 7th to 9th segment.**