1.

which one feature is common to Amphioxus , frog sea horse and crocdileA. pharyengeal gell slits at least in the developmental stagesB. A three - chambered heatC. dorsal solid nerve chordD. skeleton formed fo cartilage and bones

Answer» Correct Answer - A
Stenohaline fishes have only a narrow range of salinity tolerance and hence remain restricted to either fresh or salt water.


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