Rhagon type of larva is found in

Options

A. Leucosolenia
B. Sycon
C. Spongilla
D. all sponges

Answer

### Step-by-Step Solution

1. **Understanding the Question**: The question asks about the Rhagon type of larva and which organism it is found in.

2. **Identifying the Options**: The options provided are:
- A) Leucoselenia
- B) Cycan
- C) Spondyla
- D) Spongilla

3. **Analyzing Each Option**:
- **Leucoselenia**: This is a marine sponge. Since Rhagon type larvae are freshwater larvae, this option is incorrect.
- **Cycan**: This is also a tubular marine sponge. Like Leucoselenia, it does not have freshwater larvae, making this option incorrect as well.
- **Spondyla**: This is a freshwater sponge. It is known to possess Rhagon type larvae, making this option a potential correct answer.
- **Spongilla**: This is another freshwater sponge. It also possesses Rhagon type larvae, but it is not the primary name associated with this type.

4. **Conclusion**: The correct answer is **Spondyla**, as it is specifically known for having Rhagon type larvae.

### Final Answer
**Spondyla** is the organism in which Rhagon type of larva is found.

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