ECOLOGY
EXCRETORY PRODUCTS AND THEIR ELIMINATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which nitrogenous waste has the greatest number of nitrogen atoms?
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ammonium ions
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uric acid
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ammonia
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urea
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Explanation:
Detailed explanation-1: -Mammals excrete urea in the urine. Urea is the chief nitrogenous waste in mammals.
Detailed explanation-2: -Uric acid is also less toxic than ammonia or urea. It contains four nitrogen atoms; only a small amount of water is needed for its excretion.
Detailed explanation-3: -The two types of nitrogenous waste are urea and uric acid. Urea is the byproduct of ammonia in mammals, whereas uric acid is the byproduct of ammonia in birds and reptiles.
Detailed explanation-4: -Nitrogenous Waste in Birds and Reptiles: Uric Acid Uric acid is a compound similar to purines found in nucleic acids. It is water insoluble and tends to form a white paste or powder; it is excreted by birds, insects, and reptiles.
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