Assertion : Tobacco contains a large number of alkaloids including nicotine.
Reason : Nicotine stimulates adrenal glands which decrease blood pressure and increase heart rate.

Options

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

Answer

C

Explanation

Tobacco contains a large number of chemical substances including nicotine, an alkaloid. Nicotine stimulates adrenal gland to release adrenaline and nor- adrenaline into blood, both of which raise blood pressure and increase heart rate.