Echinoderm Anatomy: The water vascular system is composed of the ring and radial canals.
The water vascular system of echinoderms
A) functions as a circulatory system that distributes nutrients to body cells
B) functions in locomotion and feeding
C) is bilateral in organization, even though the adult animal is not bilaterally symmetrical
D) moves water through the animal's body during suspension and feeding
E) is analogous to the gastrovascular cavity of flatworms
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