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Question

'Sea lilly' are the members of the class

A
Ophiuroidea
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B
Asteroidea
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C
Crinoidea
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D
Echinoidea
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Solution

The correct option is C Crinoidea
'Sea lilies' are crinoids belongs to class Crinoidea with a calyx and five pairs of feather-like arms standing on a long stalk, which is retained throughout the animal's life. This stalk is attached to the substrate by means of an enlarged, terminal disc or alternatively by means of several branching, irregular radicular cirri arising from the lowest part of the stem. Hence, option C is correct.

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