The advantage of excreting wastes as urea rather than as

Last updated: 7/17/2022

The advantage of excreting wastes as urea rather than as ammonia is that urea requires less water for excretion than ammonia. less nitrogen is removed from the body. urea elimination does not affect the osmolar gradient. Ourea is more toxic than ammonia so the animal can get rid of toxic substances easier. urea can be exchanged for Na+.