Statement A : Ambulacral system plays major role in locomotion of echinoderm.
Statement B : Hydraulic pressure of fluid and contraction of muscle of tube feet make possible movement of echinoderm.

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Both statement A and statement B are correct

Both statement A and statement B are incorrect

Statement A is correct but statement B is incorrect

Statement B is correct but statement A is incorrect

answer is A.

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Detailed Solution

The water vascular system is a unique organ system that functions in locomotion, feeding, respiration and excretion. Ambulacral canal is connected to outside through external tube feet. Hydraulic pressure of fluid and contraction of muscle of tube feet make possible movement of echinoderms.

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