Echinoderms have a unique water vascular system with tube feet.
All echinoderms are deuterostomes .
Deuterostomes can have a water vascular system with tube feet.
What can have a water vascular system with tube feet?
A) ducks
B) peachleaf willow
C) cats
D) orchids
E) Most plants
F) horses
G) animals
H) deuterostomes