QAL Laws & Regulation Practice Exam

Which one of the following is an example of a biological pest control method?

1. Using chemical sprays

2. Applying traps

3. Introducing natural predators

4. Cleaning up debris from the area

The correct answer is: Introducing natural predators

The selection of introducing natural predators as an example of a biological pest control method is accurate because this approach directly relies on utilizing natural organisms to manage pest populations. Biological pest control involves the use of living organisms, such as predators, parasites, or pathogens, to suppress pest species. This method not only targets the pest directly but also fosters an ecological balance that can limit the pest's impact over time without relying on synthetic chemicals. In contrast, using chemical sprays represents a chemical control method rather than a biological one, focusing on synthetic means to eliminate pests. Applying traps may physically capture pests, but it doesn't involve leveraging natural biological relationships. Cleaning up debris can help reduce pest habitats, yet it does not constitute a biological control measure, as it involves habitat management rather than the introduction of biological agents. Thus, the introduction of natural predators best exemplifies the concept of biological pest control.