Which one is the larva of starfish ?

Options

A. Bipinnaria
B. Nauplius
C. Glochidium
D. Trochophore

Answer

**Step-by-Step Solution:**

1. **Identify the organism:** The question asks for the larva of a starfish, which is also known as a sea star.

2. **Classify the organism:** Starfish belong to the Phylum Echinodermata and the Class Asteroidea. The name Asteroidea is derived from their star-like shape.

3. **Determine the larval form:** The larval form of starfish is specifically called Bipinaria larva. This is the immature structure that develops from the fertilized egg of the starfish.

4. **Eliminate other options:** The other options provided in the question are different types of larvae:
- Nauplius larva is found in Phylum Arthropoda, specifically in crustaceans (Class Crustacea).
- Glossidium larva is found in Phylum Mollusca.
- Trochophore larva is found in both Phylum Annelida and Mollusca.

5. **Conclude the answer:** Based on the classification and identification of the larval forms, the correct answer to the question "Which one is the larva of starfish?" is Bipinaria larva.

**Final Answer:** The larva of starfish is Bipinaria larva.

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