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Echinodermata

Published on Nov 24, 2015

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1.

Echinodermata

Hannah Quinn, Fourth Period 
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2.

Echinodermata belong to the class Asteroidea

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3.

Echinodermata are invertebrates

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4.

Their bodies are characterized by five part radial symmetry around a central disc

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5.

Ex: starfish, sea urchins, sand dollars, and sea cucumbers

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6.

The body of an echinoderm is covered by a hard exoskeleton which protects its organs

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7.

The exoskeleton may be grainy, smooth, or covered in overlapping plates

Photo by Ocean Networks Canada
8.

Echinoderms have no heart, eyes, or brains.

Photo by Ocean Networks Canada

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