Which statement is NOT true about echinoderms?
A) The exoskeleton is made up of bony tissue.
B) Gas exchange occurs through gills on the skin.
C) Larvae are free-swimming and bilaterally symmetrical.
D) A water vascular system allows the tube feet to produce suction.
E) Symmetry is radial in the adult,usually with parts in fives or multiples of five.
Correct Answer:
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