Multiple choice

Which among the following mechanisms of action of a herbicide affects the cell membrane production in the meristems of the grass plant leading to its death?

  1. ACCase inhibitors

  2. EPSPS inhibitors

  3. Synthetic auxins

  4. Photosystem I inhibitors

  5. Photosystem II inhibitors
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A Correct answer
Explanation

ACCase inhibitors compounds kill grasses. Acetyl coenzyme A carboxylase (ACCase) is part of the first step of lipid synthesis. Thus, ACCase inhibitors affect cell membrane production in the meristems of the grass plant. The ACCases of grasses are sensitive to these herbicides, whereas the ACCases of dicot plants are not.

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