Question

Herbicide DCMU [(3-C, 3, 4-dichlorophenyl) -1, 1-dimethyl urea] kills plants due to stoppage of

• A. Photophosphorylation
• B. Rubisco activity
• C. Electron transport
• D. $O_2$-evolution

Answer 1

The correct option is D $O_2$-evolution

DCMU [(3-C, 3, 4-dichlorophenyl) -1, 1-dimethyl urea is a plant that works by stopping the oxygen evolution in plants.

Excess of oxygen in plants leads to the toxicity by oxygen that causes severe tissue damage.

So, the correct option is 'O₂ evolution'