Larval forms of echinoderms show the following symmetry

Options

A. Bilateral
B. radial
C. biradial
D. pentamerous radial

Answer

### Step-by-Step Solution:

1. **Understanding Echinoderms**: Echinoderms are a unique phylum of marine animals that include starfish, sea urchins, and sea cucumbers. They exhibit different types of symmetry at different life stages.

2. **Identifying Larval Forms**: The larval forms of echinoderms are the early developmental stages before they transform into adults. It is important to note the characteristics of these larval forms.

3. **Symmetry in Larval Forms**: The larval forms of echinoderms exhibit bilateral symmetry. This means that if you were to draw a line down the middle of the larva, both halves would be mirror images of each other.

4. **Symmetry in Adult Forms**: In contrast, adult echinoderms display radial symmetry. This type of symmetry allows for the organism to be divided into similar halves by multiple planes.

5. **Conclusion**: The question specifically asks about the symmetry in larval forms of echinoderms. Based on the information gathered, the correct answer is that larval forms of echinoderms show bilateral symmetry.

### Final Answer:
**Bilateral symmetry** is the symmetry found in the larval forms of echinoderms.

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