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Echinoderms Are Unusual Invertebrates as They Have All of the Following

Question 76

Multiple Choice

Echinoderms are unusual invertebrates as they have all of the following except:

A) an endoskeleton.
B) pentaradial symmetry.
C) a water vascular system.
D) pedicellariae present in some classes.
E) small disc-shaped flat bodies.

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