Choose the correct match

Options

A. Nereis – Internal fertilisation
B. Pheretima – Internal fertilisation
C. Hirudinaria – Internal fertilisation
D. Ascaris – Internal fertilisation

Answer

To solve the question "Choose the correct match," we need to evaluate each option provided and determine whether the statements about fertilization methods are correct.

### Step-by-Step Solution:

1. **Evaluate Neris:**
- The statement claims that Neris undergoes internal fertilization.
- **Fact Check:** Neris actually performs external fertilization.
- **Conclusion:** The statement is incorrect.

2. **Evaluate Ferritima:**
- The statement claims that Ferritima undergoes internal fertilization.
- **Fact Check:** Ferritima also performs external fertilization.
- **Conclusion:** The statement is incorrect.

3. **Evaluate Herodineria:**
- The statement claims that Herodineria undergoes internal fertilization.
- **Fact Check:** Herodineria performs external fertilization as well.
- **Conclusion:** The statement is incorrect.

4. **Evaluate Ascaris:**
- The statement claims that Ascaris undergoes internal fertilization.
- **Fact Check:** Ascaris does indeed perform internal fertilization, as the sperm and egg are produced separately and diffuse inside the body.
- **Conclusion:** The statement is correct.

### Final Answer:
The correct match is **Ascaris** with **internal fertilization**. Therefore, the correct option is option number four.

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