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Which is not an echinoderm? A) sea star B) sea urchin C) sand dollar D) spider
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2 votes
Which is not an echinoderm?

A) sea star
B) sea urchin
C) sand dollar
D) spider

User DoTheEvo
by
8.5k points

2 Answers

3 votes
spider (echinoderms have no freshwater or land based organisms)
User Glen Despaux Jr
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A echinoderm is a marine invertebrate. Starfish, Sea urchin, and Sand dollar, all of following are echinoderms. A spider is a an arachnid. Which means a spider is NOT a echinoderm.

Answer: D) Spider
User Valdir Stumm Junior
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