Which one of the following pairs of animal comprises' jawless fishes'
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Lampreys and eels
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Mackerels and rohu
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Lampreys and hag fishes
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Guppies and hag fishes
C.
Lampreys and hag fishes
Lampreys and myxine (hagfish) belong to the class- Cyclostomata, group-Agnatha of Vertebrata. Agnatha has mouth without jaws. In these, the mouth is ventral, Suctorial and circular.