Texas Pesticide Applicator Practice Exam

What is the primary purpose of insect growth regulators?

1. To kill adult insects

2. To alter insect growth processes

3. To enhance insect visibility

4. To repel pests

The correct answer is: To alter insect growth processes

The primary purpose of insect growth regulators is to alter insect growth processes. These substances are designed to disrupt the normal development of insects by interfering with their hormonal systems, which are crucial for processes such as molting and metamorphosis. By inhibiting these processes, insect growth regulators can effectively prevent immature insects from progressing to adult stages, thereby reducing pest populations over time. This mechanism allows for a more targeted and environmentally friendly approach to pest control, as they do not kill insects outright but rather interrupt their life cycles. In contrast, options that focus on killing adult insects or enhancing visibility do not align with the specific function of insect growth regulators. Likewise, repelling pests is a different strategy altogether that does not involve altering growth processes.