Question

To maintain homeostasis freshwater fish must _____.

A) excrete large quantities of electrolytes
B) consume large quantities of water
C) excrete large quantities of water
D) take in electrolytes through simple diffusion

Answer 1

Answer:

Excrete large quantities of water. (Ans. C)

Explanation:

Freshwater fish is able to maintain their homeostasis with the help of osmoregulation. Osmoregulation helps to maintain the concentrations of electrolytes, and the fluid balance to keep the body fluids from becoming too concentrated.

In fish osmoregulation helps to maintain water, and Internal balance of salts. Freshwater fish contains high concentration of salt inside the body compare to external environment. These fish have efficient kidneys which helped them to excrete water quickly, and reabsorb salts from their urine.