Question

Which excretory material is least toxic ?
(a) Ammonia
(b) Urea
(c) Uric acid
(d) Trimethylamine oxide

Answer 1

Answer:

C

Uric Acid

Ammonia, urea and uric acid are the major forms of nitrogenous wastes excreted by the animals. Ammonia is the most toxic form and requires large amount of water for its elimination, whereas uric acid, being the least toxic, can be removed with a minimum loss of water. The process of excreting ammonia is Ammonotelism.

Answer 2

Answer:

trimethylamine oxide

Explanation:

most toxic is ammonia followed by urea and then uric acid