Find the odd example

Options

A. Sea lily
B. Sea fan
C. Sea cucumber
D. Sea urchin

Answer

To solve the question "Find the odd example" from the options provided (sea lily, sea fan, sea cucumber, and sea urchin), we will analyze each option step by step.

### Step 1: Identify the Phylum of Each Organism
1. **Sea Lily (Antidon)**: This organism belongs to the phylum **Echinodermata**.
2. **Sea Fan (Gorgonia)**: This organism belongs to the phylum **Cnidaria**.
3. **Sea Cucumber (Holothuria)**: This organism also belongs to the phylum **Echinodermata**.
4. **Sea Urchin (Kainis)**: This organism belongs to the phylum **Echinodermata**.

### Step 2: Group the Organisms by Phylum
- **Echinodermata**: Sea Lily, Sea Cucumber, Sea Urchin
- **Cnidaria**: Sea Fan

### Step 3: Determine the Odd One Out
From the grouping, we can see that:
- Three organisms (Sea Lily, Sea Cucumber, Sea Urchin) belong to the phylum **Echinodermata**.
- One organism (Sea Fan) belongs to the phylum **Cnidaria**.

### Conclusion
Since the Sea Fan is the only organism that does not belong to the phylum Echinodermata, it is the odd one out.

### Final Answer
The odd example is **Sea Fan**.

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