Question

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

• 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 the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

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.