Mark the wrong statement with respect to human body.
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a
The primary function of sweat is to remove the wastes like NaCl, lactic acid, etc.
b
Small amounts of nitrogenous wastes like urea could be eliminated through saliva.
c
Lungs remove large amounts of CO2 and also significant quantities of water every day.
d
Sebaceous gland secretion provides a protective oily covering for the skin.
answer is A.
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Detailed Solution
The primary function of sweat is to facilitate a cooling effect on the body surface. Sweat produced by the sweat glands is a watery fluid which also helps in the removal of wastes like NaCl, small amounts of urea, lactic acid, etc.