A) Annelida
B) Mollusca
C) Echinodermata
D) Arthropoda
Correct Answer: C
Solution :
Echinoderms are exclusively marine. These are spinny skined animals which are radially symmetrical. Locomotion by special small and hollow, sac like tubular processes called tube feet and connected with water vascular system. Tube feet also assist in feeding, sensory reception and respiration.
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