Coelom in flat worms is

Options

A. Well developed
B. Poorly developed
C. Schizocoel
D. Absent .

Answer

To answer the question about the presence of coelom in flatworms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Coelom**:
- Coelom is a fluid-filled body cavity that is completely lined by mesoderm. It is found in many animals and serves various functions, including housing organs and allowing for greater mobility.

2. **Identify the Group in Question**:
- The question specifically asks about flatworms, which belong to the phylum Platyhelminthes.

3. **Research the Body Structure of Flatworms**:
- Flatworms are known to be acoelomate, meaning they lack a true coelom. Instead of having a body cavity, their bodies are filled with a solid mass of tissue.

4. **Evaluate the Options Given**:
- The options provided are:
- 1) Well developed
- 2) Poorly developed
- 3) Schizocoel
- 4) Absent
- Since flatworms do not have a coelom, the correct answer is option 4, which states that the coelom is absent.

5. **Conclusion**:
- Therefore, the correct answer to the question "Coelom in flatworms is" is option 4: absent.