Molluscs are

Options

A. Unsegmented
B. Soft bodied
C. Shelled
D. All the above

Answer

**Step-by-Step Solution:**

1. **Understanding Molluscs**: Molluscs belong to the phylum Mollusca, which includes a diverse group of animals primarily found in aquatic environments.

2. **Body Structure**: Molluscs are characterized by their soft-bodied structure. This means that their bodies are not segmented like those of annelids (segmented worms).

3. **Presence of Shell**: Many molluscs have a hard calcareous shell that covers their soft body. This shell provides protection and support.

4. **Germ Layers**: Molluscs are triploblastic organisms, meaning they have three germ layers: ectoderm, mesoderm, and endoderm. This classification indicates a more complex body structure compared to diploblastic organisms.

5. **Symmetry**: Molluscs exhibit bilateral symmetry, meaning their body can be divided into two equal halves along one plane.

6. **Coelomate Nature**: Molluscs are coelomates, which means they possess a true coelom (body cavity) that is lined by mesodermal tissue.

7. **Conclusion**: Based on the characteristics discussed, molluscs can be described as unsegmented, soft-bodied, and shelled animals. Therefore, the correct answer to the question is "all the above."

**Final Answer**: Molluscs are unsegmented, soft-bodied, shelled animals. The correct option is "all the above."

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