Which of the following is a characteristic of cell membrane disruptor herbicides?

Which of the following is a characteristic of cell membrane disruptor herbicides?

• A. Systemic herbicides
• B. Contact herbicides
• C. Pre-emergent herbicides
• D. Soil-incorporated herbicides

Answer: (B)

Cell membrane disruptor herbicides are specifically designed to target the structures of plant cells, leading to a rapid breakdown of cellular integrity and function. This mode of action is characteristic of contact herbicides, which work on the plant surface to create immediate harm. These herbicides prevent normal cellular processes by damaging the cell membranes, resulting in wilting and overall plant death shortly after application. In contrast, systemic herbicides are absorbed by the plant and translocated throughout its tissues, affecting more than just the immediate site of application. Pre-emergent herbicides prevent the germination of seeds rather than targeting existing plants, and soil-incorporated herbicides require mixing into the soil before they can be effective, which is different from the nature of contact herbicides that act on contact with plant tissues. Therefore, the defining characteristic of cell membrane disruptor herbicides aligns with the mode of action of contact herbicides, making this choice the most appropriate option.

Cell membrane disruptor herbicides are specifically designed to target the structures of plant cells, leading to a rapid breakdown of cellular integrity and function. This mode of action is characteristic of contact herbicides, which work on the plant surface to create immediate harm. These herbicides prevent normal cellular processes by damaging the cell membranes, resulting in wilting and overall plant death shortly after application.

In contrast, systemic herbicides are absorbed by the plant and translocated throughout its tissues, affecting more than just the immediate site of application. Pre-emergent herbicides prevent the germination of seeds rather than targeting existing plants, and soil-incorporated herbicides require mixing into the soil before they can be effective, which is different from the nature of contact herbicides that act on contact with plant tissues. Therefore, the defining characteristic of cell membrane disruptor herbicides aligns with the mode of action of contact herbicides, making this choice the most appropriate option.