Which of the following statements is incorrect?

Options

A. In ureotelic organisms, ammonia is not a product of metabolism.
B. In mammals, some amount of urea may be retained in the kidney matric to maintain osmalority.
C. In fish, kidneys do not play any significant role in the removal of ammonium ions.
D. Urea and uric acid are less toxic than ammonia.

Answer

A

Explanation

In ureotelic organisms, ammonia is produced by metabolism which when gets converted into urea. This urea is then exreted out by the kidneys and thus these animals are ureotelic.