The characteristic larva of Ctenophora is

Options

A. Cydippid
B. Veliger
C. Nauplius
D. Trochophore

Answer

To answer the question about the characteristic larva of Ctenophora, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the characteristic larva of the phylum Ctenophora.

2. **Review the Options**: We need to analyze the given options to identify which one corresponds to the larval stage of Ctenophora.

3. **Evaluate Each Option**:
- **Option A: Siphonophore**: This is incorrect. Siphonophores are colonial organisms in the phylum Cnidaria, not Ctenophora.
- **Option B: Veliger**: This is incorrect. Veliger is a larval stage found in many mollusks, not in Ctenophora.
- **Option C: Nauplius**: This is incorrect. Nauplius is the larval form of many crustaceans, not Ctenophora.
- **Option D: Cydippid**: This is the correct option. The cydippid larva is a free-swimming larval stage characteristic of Ctenophora.

4. **Conclusion**: The characteristic larva of Ctenophora is the "Cydippid" larva.

### Final Answer:
The characteristic larva of Ctenophora is **Cydippid**.

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