1.

Freshwater bony fishes maintain water balance byA. Excreting a hypotonic urineB. Excreting salt across their gillsC. Drinking small amount of waterD. Excreting wastes in the form of uric acid

Answer» Correct Answer - A
(a) Fresh water bony fishes take a large amount of water. To get rid of excess water, they pass out hypotonic urine (which is more dilute than blood plasma).


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