Multiple Choice
When a starfish, a type of echinoderm, is resting on the seafloor, its _______ face(s) the seafloor, whereas the ______ is on the upper surface of the animal.
A) mouth; anus
B) tube canal; mouth
C) tube feet; anus
D) Either a or b
E) Either a or c
Correct Answer:

Verified
Correct Answer:
Verified
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