Which one of the following pairs of animals comprises jawless fishes?

Lampreys and eels

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Mackerals and Rohu

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Lampreys and hag fishes

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Guppies and hag fishes

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Solution

The correct option is C Lampreys and hag fishes
The elongated marine and freshwater fishes lacking a jaw and paired appendages sometimes thought to constitute the taxon Agnatha. The only extant jawless fishes are the hagfishes and the lampreys. Agnatha is a superclass of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of both present and extinct species.
So, the correct answer is option C.

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