In male Ascaris, the anus and genital pore

Options

A. Open into cloaca
B. Lie side by side
C. Lie at opposite ends
D. Are absent

Answer

### Step-by-Step Solution:

1. **Understanding Male Ascaris Anatomy**:
- Male Ascaris, which is a type of roundworm, exhibits sexual dimorphism, meaning males and females have distinct anatomical features.

2. **Identifying the Openings**:
- In male Ascaris, the anus and the genital pore do not have separate openings. Instead, they share a common opening.

3. **Common Opening - Cloaca**:
- This common opening is referred to as the cloaca. The cloaca serves as a single exit point for both excretory and reproductive products.

4. **Conclusion**:
- Therefore, the correct answer to the question is that in male Ascaris, the anus and genital pore "opens into cloaca".