Choose the wrong statement about excretion

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Choose the wrong statement about excretion

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 matrix of ureotelics 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

Correct Answer:

In ureotelic organisms, ammonia is not a product of metabolism

Explanation:

Mammals, many terrestrial amphibians and marine fishes mainly excrete urea, a lesser toxic nitrogenous waste and are called ureotelic animals. Ammonia produced by metabolism is converted into urea in the liver of these animals and released into blood which is filtered and excreted out by the kidneys.

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Topics: Human Body Fluids and Excretory Products (197)
Subject: Biology (4253)

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