The Main Nitrogenous Waste of Adult Amphibians Is

Question

The main nitrogenous waste of adult amphibians is
A) ammonia.
B) urea.
C) uric acid.
D) peptides.
E) purines.

Accepted Answer

Adult amphibians primarily excrete urea as their main nitrogenous waste. This is because urea is less toxic than ammonia and requires less water for excretion, which is advantageous for their terrestrial and aquatic lifestyles.