MCQ
Canal system is a characteristic of
- AHydra
- ✓Sponge
- CSea anemone
- DSea urchin
✓
Answer
Correct option: B.
Sponge
b
(b)Sponges have a canal system and they need a continuous current of water flowing through their bodies for respiration, excretion, nutrition and reproduction.
(b)Sponges have a canal system and they need a continuous current of water flowing through their bodies for respiration, excretion, nutrition and reproduction.
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