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Question
Harmful alkaloid, contained in the leaves of tobacco is
Harmful alkaloid, contained in the leaves of tobacco is
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Solution
The correct option is C Nicotine
Nicotine is a potent parasympathomimetic alkaloid found in the nightshade family of plants (Solanaceae) and a stimulant drug. It is a nicotinic acetylcholine receptor agonist, where it acts as an antagonist. It is made in the roots and accumulates in the leaves of the nightshade family of plants. It constitutes approximately 0.63% of the dry weight of tobacco and is present in the range of 27 g/kg of various edible plants. It functions as an antiherbivore chemical; consequently, nicotine was widely used as an insecticide in the past and nicotine analogs, such as imidacloprid are currently widely used. So, narcotic and soothing properties of tobacco is due to nicotine and not due to caffeine, aconite and codeine. Thus, the correct answer is option C.
Nicotine is a potent parasympathomimetic alkaloid found in the nightshade family of plants (Solanaceae) and a stimulant drug. It is a nicotinic acetylcholine receptor agonist, where it acts as an antagonist. It is made in the roots and accumulates in the leaves of the nightshade family of plants. It constitutes approximately 0.63% of the dry weight of tobacco and is present in the range of 27 g/kg of various edible plants. It functions as an antiherbivore chemical; consequently, nicotine was widely used as an insecticide in the past and nicotine analogs, such as imidacloprid are currently widely used. So, narcotic and soothing properties of tobacco is due to nicotine and not due to caffeine, aconite and codeine. Thus, the correct answer is option C.
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