Herbicides prevent

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Question

(B) Many herbicides,such as $DCMU$ $(3-(3,4-dichlorophenyl)-1,1-dimethylurea)$,act by blocking the electron transport chain in photosynthesis. Specifi

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Photolysis of water

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(B) Many herbicides,such as $DCMU$ $(3-(3,4-dichlorophenyl)-1,1-dimethylurea)$,act by blocking the electron transport chain in photosynthesis. Specifically,they inhibit the process of photolysis of water by interfering with the $PS-II$ complex. This prevents the splitting of water molecules,thereby stopping the production of oxygen and the flow of electrons required for the light-dependent reactions.

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