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In Asteroidea the ________ System Consists of Strands of Tissue

Question 20

Multiple Choice

In Asteroidea the ________ system consists of strands of tissue that encircle the mouth near the ring canal and run into each arm near the radial canals.As in other echinoderms,this system probably transports digestive products,hormones,and other substances.


A) hemal
B) secretory
C) skeletal
D) muscular
E) excretory

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