Which of the following describe(s)echinoderms?
A) They have an exoskeleton of hard calcareous plates.
B) Tubefeet provide motility in most species.
C) Digestion occurs completely outside of the organism.
D) Hemolymph circulates in the water vascular system.
E) They are found in both freshwater and saltwater environments.

Question

Quizplus · Accepted Answer

Echinoderms have a unique water vascular system that includes tube feet, which aid in movement.

Which of the Following Describe(s)echinoderms