Which of the following describes the mechanism of 2,4-D?

The mechanism of 2,4-D, a widely used herbicide, primarily targets dicot plants by interfering with their growth processes. It acts as a synthetic auxin, which mimics the natural plant hormone responsible for regulating growth. This disruption leads to uncontrolled cell division, abnormal growth patterns, and depletion of food reserves, ultimately resulting in the death of dicot plants.

The effectiveness of 2,4-D is particularly pronounced in dicots due to their sensitivity to auxin imbalances. Monocots, such as grasses, are much less affected by 2,4-D, which explains why this herbicide is often employed in agricultural practices to control broadleaf weeds without harming grass crops.

In summary, the correct answer highlights the specific physiological impacts of 2,4-D on dicot plants, showcasing its targeted use as a selective herbicide.