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Water vascular system is a characteristic feature of ______?

Water vascular system is a characteristic feature of ______?

واٹر واسکولر سسٹم ______ کی ایک خصوصیت ہے؟
Explanation
  • The water vascular system is a unique feature of echinoderms (e.g., starfish, sea urchins) used for locomotion, feeding, and respiration.
  • It consists of tube feet and a network of canals that function using hydraulic pressure.