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.