Pick the incorrect statement regarding echinoderms
A
I
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B
II
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C
III
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D
IV
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Solution
The correct option is D
IV
The body of an echinoderm typically has an endoskeleton made of calcareous spicules. Adults show pentaradial symmetry while larvae show bilateral symmetry. Water vascular system is well developed and aids in locomotion, feeding and respiration. They exhibit organ system level of organisation.