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Echinoderms

Marine organisms that exhibit five fold radial symmetry and have a water vascular system.

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Invertebrates: Species Study Guide
Student Contributed
This study guide summarizes the ecology, body structure, and reproduction of sponges, cnidarians, flatworms, roundworms, mollusks, annelids, arthropods, insects, and echinoderms. It also includes further classification of arthropods and echinoderms.
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