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How are echinoderms and cnidarians different?

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Start studying Cnidarians, Echinoderms, and Sponges. Learn vocabulary, terms, and more with flashcards, games, and other study tools. read more

Best Answer: Cnidarians are very primitive organisms, and echinoderms are much more derived. This is the simplest point of the problem. To get more advanced, the echinoderms have actually secondarily derived a radial symmetry from a bilateral one (their larvae are bilateral). read more

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