Question

The following substances are excretory products in animals. Choose the least toxic form among them.

• A. Urea
• B. Uric acid
• C. Ammonia
• D. Carbon dioxide

Answer 1

The correct option is B

Uric acid

The explanation for the correct option:-

1. The correct option is (B) Uric acid
2. Nitrogenous waste materials together with ammonia, urea, or uric acid are produced at some point of protein metabolism in line with the species. A small wide variety of nitrogenous waste materials also are produced at some point in the metabolism of nucleic acids.
3. So the right choice is B.

The explanation for the incorrect option:-

Option A:

Uric acid is the least toxic substance that is an excretory product in animals so option (a) urea is the incorrect option.

Option C:

Uric acid is the least toxic substance that is an excretory product in animals so option (c) Ammonia is the incorrect option.

Option D:

Uric acid is the least toxic substance that is an excretory product in animals so option (d) Carbon dioxide is the incorrect option.

Hence, Option (B) uric acid is the correct option.