Coelom filled with musuclur and connective tissues or botryoidal tissue occurs in

Options

A. Ascaris
B. Nereis
C. Pheretima
D. Hirudo

Answer

To solve the question regarding which organism has a coelom filled with muscular and connective tissues or botryoidal tissue, we will analyze the options provided: Ascaris, Neris, Farotema, and Hirudo.

### Step-by-Step Solution:

1. **Understanding Botryoidal Tissue**:
- Botryoidal tissue is a grape-like mass of cells that contains brown pigment and functions in excretion. It is typically found in members of the phylum Annelida.

2. **Analyzing the Options**:
- **Ascaris**: This organism is a nematode (roundworm) and has a pseudocoelom, which is a body cavity that is not a true coelom. Therefore, it does not contain botryoidal tissue.
- **Neris**: This is a genus of polychaete worms. Neris has a true coelom, known as a coelomate body plan, but it does not contain botryoidal tissue.
- **Farotema**: This is another name for earthworms. Earthworms have a coelom filled with coelomic fluid and do not specifically have botryoidal tissue.
- **Hirudo**: This is the genus of leeches. Hirudo has a coelom that is filled with muscular and connective tissues, including botryoidal tissue.

3. **Conclusion**:
- Based on the analysis, the organism that has a coelom filled with muscular and connective tissues or botryoidal tissue is **Hirudo**.

### Final Answer:
The correct answer is **Hirudo**.