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Question

The major nitrogenous excretory product in mammals is,

A
Amino acids
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B
Ammonia
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C
Urea
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D
Uric acid
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Solution

The correct option is C Urea
The mammals are ureotelic organisms. The ammonia which is produced by the deamination reactions during the metabolism of amino acids and proteins is converted to urea in the liver by the urea cycle. The urea is excreted along with the urine and feces.
Thus, the correct answer is option C.

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