Echinoderms are a phylum of marine animals that are easily recognized by their (usually five-point) radial symmetry. Which of the following is not an echinoderm?

Animals

4)	Echinoderms are a phylum of marine animals that are easily recognized by their (usually five-point) radial symmetry. Which of the following is not an echinoderm?

A) Sponge
B) Sea Star
C) Sea Urchin
D) Sand Dollar

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