Question

Read the assertion and reason carefully to mark the correct option in question.

Assertion: Sweat glands help in removal of sterols, hydrocarbons and waxes.

Reason: Sebaceous glands eliminate certain substances like NaCl, small amount of urea and lactic through sebum.

• A. If both assertion and reason are false.
• B. If both assertion and reason are true and the reason is the correct explanation of the assertion.
• C. If both assertion and reason are true but reason is not the correct explanation of the assertion.
• D. If the assertion is true but the reason is false.

Answer 1

The correct option is A If both assertion and reason are false.

• Excretory substances like sterols, hydrocarbons and waxes are eliminated by sebaceous glands through the sebum secreted by it. This secretion provides a protective oily covering on the skin. Hence, the assertion statement is incorrect.
• Function of sweat is to facilitate a cooling effect on the body surface. The watery fluid secreted by sweat gland is composed of NaCl, small amounts of urea, lactic acid. Hence, the reason statement is incorrect.
• Hence, option (D) is correct: If both assertion and reason are false.