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Freshwater bony fishes maintain water ba...

Freshwater bony fishes maintain water balance by

A

Excreting hypotonic urine

B

Excreting salt across their gills

C

Drinking small amount of water

D

Excreting waste in the form of uric acid

Text Solution

Verified by Experts

The correct Answer is:
A
Freshwater fish are hypertonic to their water environment and therefore water is continually diffusing into the fish through the gill membranes into the blood. Thus to maintain osmotic balance it excrete hypotonic urine
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