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Practice question

MCQ

Question

Below are some of the proposed roles of reactive oxygen species (ROS) in plant defense. A. H₂O₂ may be directly toxic to pathogens B. In presence of iron, H₂O₂gives rise to an extremely reactive hydroxyl radical. C. H₂O₂leads to induced biosynthesis of salicylic acid (SA). D. H₂O₂production is always delayed during incompatible interactions. Which one of the following options represents the combination of all correct statements?

Options

Choose one · Correct answer highlighted

Explanation

In below are some of the proposed roles, A, B and C represents established outcome. functional assays confirms option A (A, B and C) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.

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