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(D) The mode of action of pesticides varies significantly based on their chemical structure and target site.$DDT$ is an organochlorine that acts by ke

Vedclass · Accepted Answer

None of these

Vedclass · Answer

(D) The mode of action of pesticides varies significantly based on their chemical structure and target site.$DDT$ is an organochlorine that acts by keeping sodium channels open in nerve cells,leading to repetitive firing.Organophosphates and carbamates,on the other hand,share a similar mode of action: they both act as acetylcholinesterase inhibitors.By inhibiting the enzyme acetylcholinesterase,they prevent the breakdown of the neurotransmitter acetylcholine,leading to overstimulation of the nervous system.Since none of the provided pairs ($A$,$B$,$C$) correctly represent groups with identical modes of action (as organochlorines and organophosphates have distinct mechanisms),the correct answer is $D$.

The mode of action of pesticides is similar in which of the following groups?

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