Skeleton made of spongin fibres occurs in [CPMT 2001; RPMT 2001]
A) Calcarea
B) Demospongiae
C) Hexactinellida
D) Both (a) and (b)
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hy.....it's ans is demospongiae
spongin fibres occur in various form in class demospongiae .It may occur as a cement connecting together the siliceous spicules.
hope this helps u
spongin fibres occur in various form in class demospongiae .It may occur as a cement connecting together the siliceous spicules.
hope this helps u
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Answer:
=> SKELETON MADE UP OF SPONGIN FIBRES OCCURS IN DEMOSPONGIAE
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