Sharks maintain osmotic equilibrium with the ocean water by the kidney conserving _______,allowing it to accumulate in the blood until osmolarity is near that of seawater.
A)ammonia
B)sodium ions
C)calcium
D)all salts
E)urea

Question

Quizplus · Accepted Answer

Sharks maintain osmotic equilibrium with the ocean water by conserving urea in their blood until its concentration is similar to that of seawater. This helps prevent any water uptake or loss from their body via osmosis.

Sharks Maintain Osmotic Equilibrium with the Ocean Water by the Kidney