Question

Discus the affinities of cyclostmota(petromyzon)

Answer 1

Cyclostomata is a group of agnathans that comprises the living jawless fishes: the lampreys and hagfishes. Lampreys live parasitically in the sea for about 2.5-3 years and then migrate to freshwater where they breed. Petromyzon has a peculiar breeding habit and breeds only once in its life.

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Answer 2

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Cyclostomata is a group of agnathans that comprises the living jawless fishes: the lampreys and hagfishes. Lampreys live parasitically in the sea for about 2.5-3 years and then migrate to freshwater where they breed. Petromyzon has a peculiar breeding habit and breeds only once in its life.

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