Which of the following is not a nitrogenous waste; that must be excreted from the body?
A
Uric acid
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B
Faeces
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C
Urea
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D
Ammonia
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Solution
The correct option is A Faeces Metabolic wastes are substances left over from a metabolic process which cannot be used by the organisms and must, therefore, be excreted. This includes nitrogen compounds. The nitrogen compounds through which excess nitrogen is eliminated from the organism are called nitrogenous wastes. They are ammonia, urea, uric acid, and creatinine.