MCQ
Which organ system is lacking in the animals that bear water vascular system?
- ANervous system
- ✓Excretory system
- CCirculatory system
- DSensory system
✓
Answer
Correct option: B.
Excretory system
b
Water vascular system is characteristic feature of echinoderms. In echinoderms, specialised excretory system is absent. The excretory products diffuse out from the body tissue into coelomic fluid from where waste is eliminated out.
Water vascular system is characteristic feature of echinoderms. In echinoderms, specialised excretory system is absent. The excretory products diffuse out from the body tissue into coelomic fluid from where waste is eliminated out.
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