Multiple choice

The poisonous substance that is the main constituent in tobacco is

  1. reserprine

  2. nicotine

  3. aspirin

  4. morphine

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nicotine is the primary addictive and toxic alkaloid present in tobacco leaves, constituting approximately 0.6-3.0% of dry tobacco weight. Reserpine is an anti-hypertensive drug from Rauwolfia, aspirin is from willow bark, and morphine is an opioid from poppy plants - none are constituents of tobacco.

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