MDARD Michigan Core Pesticide Applicator Practice Exam

What is absorption in relation to pesticides?

1. The process of chemical bonding to soil

2. The uptake of chemicals by plants and organisms

3. The release of pesticides into the environment

4. The evaporation of chemicals into the air

The correct answer is: The uptake of chemicals by plants and organisms

Absorption in relation to pesticides refers to the uptake of chemicals by plants and organisms. This process is critical in understanding how pesticides interact with target species in the environment. When a pesticide is applied, it can be absorbed through various plant tissues, such as leaves and roots, allowing it to exert its intended effects on pests. Additionally, organisms like insects and soil microorganisms may also absorb pesticides, which can impact their physiology, behavior, and survival. Understanding absorption is vital for determining the efficacy of pesticide applications and for predicting potential non-target effects on the ecosystem. For example, knowing which plants are likely to absorb a pesticide helps in managing its application to minimize environmental impact while maximizing pest control. In contrast to absorption, other concepts such as chemical bonding to soil, release into the environment, and evaporation address different aspects of pesticide behavior but do not involve the direct uptake of the chemicals by biological systems.