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6 October, 16:25

Echinoderms, like sea stars, have a ring-likenerve netladder-like nervous system

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  1. 6 October, 19:46
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    The answer is a ring-like nervous system.

    Echinoderms do not have brains. They have a simple radial nervous system. Around their mouth, they have central rings from which nerves radially run into arms and along the body. Movement is controlled by the branches of those radial nerves.
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