Which of the Following Animals Generally Has the Lowest Volume

Question

Which of the following animals generally has the lowest volume of urine production?
A) a vampire bat
B) a salmon in fresh water
C) a marine bony fish
D) a freshwater bony fish
E) a shark inhabiting freshwater Lake Nicaragua

Accepted Answer

Marine bony fish generally have the lowest volume of urine production because they live in a hypertonic environment (the ocean) where water is constantly being lost through osmosis. To conserve water, they produce very concentrated urine in small volumes.