Sea Cucumber belongs to class

Echinoidea

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Holothuroidea

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Asteroidea

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Ophiuroidea

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Solution

The correct option is B Holothuroidea
A) Members of Echinoidea are globular and do not have arms.
B) Members of Holothuroidea are elongated, cylindrical and have no arms. Sea cucmber is cylindrical and does not have arms.
C) Members of Asteroidea are star fish that have five arms and are star-like.
D) Members of Opiuroidea are brittle stars.
So the answer is 'Holothuroidea'

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