The herbicide DCMU kills weeds because it inhibits

respiration

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C O_{2}

fixation

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cell division

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N O_{3}

uptake

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Solution

The correct option is A $C O_{2}$ fixation
DCMU (3-(3,4-dichlorophenyl)-1,1-dimethylurea) is a herbicide. It kills weeds by inhibiting photosynthesis by stopping CO $_{2}$ fixation which plays an important role in photosynthesis .
Thus, the correct answer is 'CO $_{2}$ fixation.'

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Similar questions

Chemicals that kill weeds are known as herbicides.

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