Biology Excretory Products and Their Elimination Skill Builder Single Correct MCQ
Published on: August 21, 2026

Choose the wrong statement.

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

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The correct answer is:

                    

In ureotelic organisms, ammonia produced by metabolism is converted into urea in the liver and released into the blood which is then filtered and excreted out by the kidneys.

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