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Question : The path of water in sponge is

Answer»

pinacoyetes `RARR` choanocytesenteron `rarr` osculum
dermal OSTIA `rarr`gastral ostia `rarr`SPONGOCOEL `rarr`osculum
dermal ostia `rarr`spongocoel `rarr` gastral ostia `rarr` osculum
osculum `rarr` spongocoel `rarr`CHOANOCYTES `rarr`ostia

Answer :B


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