1.A ureotelic organism excretes excess nitrogen as urea. It is one of the three major forms of excretion of nitrogenous waste in organisms, the others being ammonotelism and uricotelism.
2.Urea is less toxic than the ammonia excreted by ammonotelic organisms.
1.Animals that excrete a major portion of nitrogenous waste in the form of semi-solid or solid uric acid are called uricotelic animals.
2.e.g. birds, lizards, snakes, terrestrial insects.