Which herbicide type translocates throughout the plant?

• A. Systemic herbicide
• B. Non-selective herbicide
• C. Preemergence herbicide
• D. Postemergence herbicide

Answer: (A)

Systemic herbicides are absorbed by a treated part of the plant and then moved through the plant’s vascular system to other tissues. This translocation allows the chemical to reach growing points and roots, killing the entire plant even if only a portion was sprayed. That internal movement is what sets systemic herbicides apart from products that stay where they’re applied and mainly affect the surface. Preemergence products act in the soil before weeds emerge, not after the plant is growing. Postemergence describes timing (after emergence) and can be systemic or contact, while non-selective refers to broad target range rather than movement. So the herbicide type that translocates throughout the plant is systemic.