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Skeleton made of spongin fibres occurs i...

Skeleton made of spongin fibres occurs in

A

Calcarea

B

Demospongiae

C

Hexactinellida

D

Both (a) and (b)

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Spongin fibres occurs in various forms in the class Demospongiae. It may occur as a cement conneting together the siliceous spicules.
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