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Question

Which of the following is NOT true for echinoderms



A

Exclusively marine

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B

No  excretory organ

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C

Water vascular system

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D

Pseudocoelomate

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Solution

The correct option is B

Pseudocoelomate


Echinoderms are characterized by radial symmetry and multiple arms. They have a unique water vascular system. Their skeletons are made up of interlocking calcium carbonate plates and spines. They are triploblastic and coelomate. Echinoderms are exclusively marine.


Biology

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