A) Annelida
B) Porifera
C) Arthropoda
D) Echinodermata
Correct Answer: C
Solution :
In arthropods, the body is covered with a thick, tough and non-living cnitinous cuticle, which forms the exoskeleton. The latter is moulted entire at intervals, eg, cockroach.You need to login to perform this action.
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