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28 June, 05:31

Which of the following is an echinoderm that moves by waving its arms?

a. sea star.

b. brittle star.

c. sea urchin.

d. sea cucumber.

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  1. 28 June, 05:49
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    B. Brittle Star is an echinoderm that moves by waving its arms.

    Brittle star is a spiny, hard-skinned, long-armed animal, related to sea star, that lives on rocky sea floor, from shallow areas to the deepest areas. It uses its flexible arms for locomotion.
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