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Echinodermata are marine animals whose adults show radial symmetry. This phylum includes starfish and sea urchins.

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15y ago
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1w ago

The primary characteristic of the phylum Echinodermata is the presence of a unique water vascular system that is used for locomotion, feeding, and respiration. This system consists of a network of fluid-filled canals and tube feet that help echinoderms move and capture food.

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Q: What is the primary characteristic of the phylum in Echinodermata?
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