What Is the Mechanism of Action by Which the Herbicide

question 42

Multiple Choice

What is the mechanism of action by which the herbicide paraquat kills plants?

• A)It competes with ferredoxin for electrons from the PSI reaction center.
• B)It interferes with PSI function.
• C)Electrons attached to paraquat are used to reduce oxygen, generating highly reactive oxygen radicals.
• D)It leads to the production of substances that damage the chloroplasts and kill the plant.
• E)All of these are correct.

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