NEET Biology Excretory Products And Their Elimination Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Answer:(d)

Excretion of urea is known as ureotelism and the animals which excrete urea are called ureotelic. Ureotelic animals include marine fishes, semi-aquatic amphibians such as frogs and toads, aquatic or semiaquatic reptiles like turtles, terrapins and alligators, and man and all other mammals. Urea is less toxic and less soluble in water than ammonia. Hence, it can stay for some time in the body. Amphibian tadpole (e.g., tadpole of frog) excrete ammonia but after metamorphosis, frog excretes urea.