What is the main distinctive feature of echinoderms?

What is the main distinctive feature of echinoderms?
  1. Complete digestive system
  2. External fertilization
  3. Bilateral symmetry in larvae
  4. Water vascular system

Solution

The most distinctive feature of echinoderms is the presence of water vascular system which helps in locomotion, capture and transport of food and respiration.

Asked in: NCERT

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