Water vascular system is a characteristic of which phylum?

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the phylum that possesses a water vascular system. This is a specific biological feature that is linked to certain organisms.

2. **Identifying the Water Vascular System**: The water vascular system is a unique feature that functions in various biological processes such as locomotion, food capture, excretion, transport of food, and respiration.

3. **Linking to the Correct Phylum**: The water vascular system is a characteristic feature of the phylum Echinodermata. This phylum includes marine animals such as starfish, sea urchins, and sea cucumbers.

4. **Functions of the Water Vascular System**:
- **Locomotion**: It helps in movement.
- **Capture of Food**: It assists in the feeding process.
- **Excretion**: It plays a role in waste removal.
- **Transport of Food**: It aids in the distribution of nutrients.
- **Respiration**: It is involved in gas exchange.

5. **Conclusion**: Therefore, the water vascular system is a characteristic of the phylum Echinodermata.

**Final Answer**: The water vascular system is a characteristic of the phylum Echinodermata.

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