A) Coelenterata
B) Nematoda
C) Porifera
D) Annelida
Correct Answer: A
Solution :
Cnidoblasts nematoblast or stinging cells are organ of offence and defence of coelenterates. Each cnidoblasts bears a sensory bristle called cnidocil and a bladder or sac called nematocyst.You need to login to perform this action.
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