In bony fish the number of gill slits is : (a) 3 pairs (b) 4 pairs (c) 6 pairs (d) 5 pairs
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the fish has 3 gills to breathe and the gills act as our lungs through which we breathe
the fish has 3 gills to breathe and the gills act as our lungs through which we breathe
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(A) option is answer ........
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