Question

Water vascular system performs all except one of the functions

• A. Excretion
• B. Locomotion
• C. Respiration
• D. Acting as sense organ

Answer 1

The correct option is D Acting as sense organ

The water vascular system is present in the organisms which belong to the group of Echinoderms. The system is a hydraulic system. This system is used by the organisms for respiration, food circulation, waste removal, excretion and locomotion. The system is composed of canals which can connect the tube feet. They can perform movement by contracting muscles. The force generated by water into the tube feet. This causes them to extend and push against the ground. The feet are then relaxed to allow the feet to retract. It does not play role in acting as sense organs.

Therefore, the correct answer is option D.