Multiple choice

Excretion of nitrogenous waste product mainly as uric acid by birds is helpful in

  1. conserving body water

  2. conserving body heat

  3. eliminating excess body water

  4. eliminating excess body heat

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Uric acid is excreted as a semi-solid paste, which requires very little water. This is an evolutionary adaptation for birds to conserve body water, especially during embryonic development in eggs.