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

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Question

(B) $Petromyzon$ (Lamprey) belongs to the Class $Cyclostomata$ of Phylum $Chordata$.It is a jawless fish that migrates from the ocean to fresh water t

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Petromyzon

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(B) $Petromyzon$ (Lamprey) belongs to the Class $Cyclostomata$ of Phylum $Chordata$.It is a jawless fish that migrates from the ocean to fresh water to lay eggs (anadromous migration).The eggs hatch in about $3$ weeks into minute,transparent larvae called ammocoetes.After metamorphosis,the young lampreys swim down to the sea,where they remain for $3$ or $4$ years before reaching maturity.Once they reach maturity,they migrate back to fresh water streams or rivers to spawn and then die.

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

Similar Questions

Which group of chordates possess sucking and circular mouth without jaws?

All the following statements are correct about $Petromyzon$ (Lamprey) except:

Which of the following is not a class of $Tetrapoda$?

Which animal is included in the subphylum Agnatha?

Statement $- I :-$ All living members of class $Cyclostomata$ are ectoparasites on some fishes.
Statement $- II :-$ $Cyclostomata$ have a sucking and circular mouth without jaws.

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