(A) The animals that lack jaws are classified under the division $Agnatha$. $Lamprey$ $(Petromyzon)$ and $Hagfish$ $(Myxine)$ are members of the class

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(A) The animals that lack jaws are classified under the division $Agnatha$. $Lamprey$ $(Petromyzon)$ and $Hagfish$ $(Myxine)$ are members of the class $Cyclostomata$,which are jawless vertebrates. $Rohu$,$Catla$,and $Seahorse$ are bony fishes that belong to the class $Osteichthyes$,which possess jaws.