MDARD Michigan Core Pesticide Applicator Practice Exam

Systemic pesticides are absorbed by which parts of the organism?

1. Only the leaves

2. Only through direct contact

3. One part and distributed to other parts

4. Only in the root system

The correct answer is: One part and distributed to other parts

Systemic pesticides are designed to be absorbed by plants or organisms through various parts, such as leaves, stems, and roots, depending on their application. Once absorbed, these chemicals are transported throughout the entire organism, leading to a uniform distribution. This characteristic allows systemic pesticides to be effective in managing pests that may not be directly contacted during application, as the active ingredient can move to different tissues within the organism, ultimately reaching the target pests. The correct option highlights this ability of systemic pesticides to be taken up by one area and then spread to other parts, ensuring that the pesticide can effectively control pests throughout the affected entity. This systemic action can create a protective barrier or affect pests that feed on the plant, even if they are not present at the time of application. Understanding this mechanism is vital for appropriate pesticide use and ensuring effective pest management strategies.