What is the impact of pesticide use on non-target species?

Prepare for the Iowa Pesticide Core Chemical Exam. Study with multiple choice questions, quizzes, and detailed explanations for a successful assessment experience. Boost your confidence and ace your exam!

The choice indicating that pesticide use can lead to harm or death of beneficial organisms, disrupting ecosystems, is correct because it highlights a significant and well-documented consequence of pesticide application. Pesticides are designed to target specific pests; however, their chemical composition and modes of action can also negatively affect non-target species. This includes beneficial insects, such as pollinators like bees, as well as birds, aquatic organisms, and soil microorganisms.

When beneficial organisms are harmed or eliminated, it can create imbalances in the ecosystem. For example, the reduction of pollinators can lead to decreased plant reproduction, while the loss of predatory species that control pest populations may allow harmful species to proliferate. These disruptions can lead to a cascade of effects that compromise the health of the ecosystem, affecting biodiversity and the overall resilience of natural habitats.

In contrast, the other options present inaccurate scenarios. Enhancing populations of all species is unrealistic since pesticide use typically does not support biodiversity. Stating that there is no effect on the ecosystem overlooks the complexity and interconnections within ecosystems that can be significantly altered by pesticide application. Lastly, claiming that pesticides only affect pests without harming others fails to account for the broad and often unintended consequences of these chemicals on non-target species. Thus

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy