A jawless fish,which lays eggs in fresh water | vedclass

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(C) The organism described is $Petromyzon$ (Lamprey).$Petromyzon$ belongs to the class $Cyclostomata$,which are jawless vertebrates.They are known for

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Petromyzon

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(C) The organism described is $Petromyzon$ (Lamprey).$Petromyzon$ belongs to the class $Cyclostomata$,which are jawless vertebrates.They are known for their unique life cycle: they migrate from the ocean to fresh water for spawning (anadromous migration).After spawning,they die,and their larvae,after metamorphosis,return to the ocean.

$A$ jawless fish,which lays eggs in fresh water and whose larvae after metamorphosis return to the ocean is

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