Find out the odd example

Options

A. Sea Cucumber
B. Sea Urchin
C. Sea Lily
D. Sea Fan.

Answer

To solve the question of finding the odd example among the given options, we will analyze each option based on their classification.

### Step-by-Step Solution:

1. **Identify the Options**:
- Option A: Sea cucumber
- Option B: Sea urchin
- Option C: Sea lily
- Option D: Sea fan

2. **Classify Each Option**:
- **Sea cucumber**: This belongs to the class Holothuroidea and the phylum Echinodermata.
- **Sea urchin**: This is known as Echinoidea and also belongs to the phylum Echinodermata.
- **Sea lily**: This is known as Antedon and belongs to the phylum Echinodermata.
- **Sea fan**: This is known as Gorgonia and belongs to the phylum Cnidaria.

3. **Compare the Phyla**:
- The first three options (sea cucumber, sea urchin, and sea lily) all belong to the phylum Echinodermata.
- The last option (sea fan) belongs to the phylum Cnidaria.

4. **Identify the Odd One Out**:
- Since the sea fan is the only option that does not belong to the phylum Echinodermata, it is the odd example.

5. **Conclusion**:
- The odd example among the options is the **sea fan** (Option D).

### Final Answer:
The odd example is **sea fan** (Option D).

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