Phylum Echinodermata

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7 Terms

1
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What are echinoderms?

Spiny-skinned animals like sea stars with radial symmetry.

2
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What is an endoskeleton in echinoderms?

An internal skeleton made of calcareous plates.

3
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What is the water vascular system?

A hydraulic system used for movement in echinoderms.

4
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What are tube feet?

Extensions of the water vascular system for movement and feeding.

5
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What is the function of pedicellaria?

Tiny pincers that help clean the skin.

6
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How do sea stars eat?

They push their stomach out to digest food externally.

7
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What is regeneration in echinoderms?

The ability to regrow lost or damaged body parts.