Coelom is filled with botryoidal tissue in

Options

A. Tapeworm
B. lugworm
C. leech
D. Earthworm

Answer

### Step-by-Step Solution:

1. **Understanding Coelom and Botryoidal Tissue**:
- Coelom is a fluid-filled body cavity found in many animals, which provides space for the internal organs and can serve various functions such as circulation and support.
- Botryoidal tissue is a specialized connective tissue found within the coelom of certain organisms. It is composed of granular cells and plays a role in connecting the coelom to the body structures.

2. **Identifying the Organism**:
- The question asks which organism has a coelom filled with botryoidal tissue. According to the information provided, botryoidal tissue is specifically mentioned to be found in the phylum Annelida.

3. **Examining the Options**:
- The options provided include:
- Tapeworm (Phylum Platyhelminthes)
- Earthworm (Phylum Annelida)
- Leech (Class Hirudinea, Phylum Annelida)
- Roundworm (Phylum Nematoda)

4. **Analyzing Each Option**:
- **Tapeworm**: Belongs to Platyhelminthes, which do not have a coelom filled with botryoidal tissue. Hence, this option is incorrect.
- **Earthworm**: While it is part of Annelida, it does not possess botryoidal tissue as it does not exhibit the looping movement necessary for this tissue's function. Therefore, this option is also incorrect.
- **Leech**: This organism is part of the class Hirudinea within Annelida. It exhibits a looping movement and has coelomic fluid that is supported by botryoidal tissue. This makes it the correct option.
- **Roundworm**: This organism belongs to Nematoda, which does not have botryoidal tissue in its coelom. Hence, this option is incorrect.

5. **Conclusion**:
- Based on the analysis, the correct answer is that coelom is filled with botryoidal tissue in the **Leech** (Class Hirudinea, Phylum Annelida).

### Final Answer:
Coelom is filled with botryoidal tissue in **Leech** (Class Hirudinea, Phylum Annelida).

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