Question

Tube feet are connected internally with

• A. Coelom
• B. Haemal system
• C. Water vascular system
• D. Dermal branchiae

Answer 1

The correct option is C Water vascular system

A) Tube feet are connected to the water vascular system.

B) Echinoderms do not have a true circulatory system like the ones found in mammals. Their blood and fluids are pumped by the water vascular system.

C) Tube feet are small tubular extensions in echinoderms which are a part of the water vascular system.

D) Dermal branchiae are projections of the coelom of class Asteroidea that help in respiration and waste removal.
So the correct answer is 'Water vascular system'.