Question

Excretion of nitrogenous wastes mainly as uric acid by bird is helpful for

• A. Conserving body water
• B. Eliminating excess body water
• C. Eliminating excess body heat
• D. Conserving body heat

Answer 1

The correct option is A Conserving body water

Excretion of nitrogenous wastes mainly as a uric acid by birds is helpful for conserving body water. Uric acid is the least toxic and the least soluble in water. It can be stored in cells and body tissues without toxic effects and requires only a tiny amount of water, about 0.001 L, per 1 g of nitrogen.

So, the correct answer is option A.