Echinoderms.

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Presentation transcript:

Echinoderms

Echinoderm Characteristics Endoskeleton – inside body 5-part radial symmetry in most Deuterostome Being deuterostomes and having endoskeltons make them much more like us than any other invertebrates

Water Vascular System Unique to echinoderms Water is taken in through tube feet in rays (arms), pumped to center, and then back out. This system carries out respiration, circulation, and movement.

Water Vascular System

Groups of Echinoderms Sea urchins & sand dollars Brittle stars Sea cucumbers Sea Stars (star fish, but they’re not fish) Sea lilies and feather stars

Sea Urchin and Sand Dollar

Brittle Stars

Sea Cucumbers

Sea Stars

Sea Lilies & Feather Stars

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