Which one is not correctly matched [Orissa JEE 2005] – McqOptions

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1.	Which one is not correctly matched [Orissa JEE 2005]
A.	Mollusca - Pseudocoel
B.	Cnidaria - Nematocyst
C.	Annelida - Chloragogen cells
D.	Echinodermata - Water vascular system
Answer» B. Cnidaria - Nematocyst

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