Oregon Pesticide Practice Test

What is the primary purpose of the signal word on a pesticide label?

1. To describe the product's ingredients

2. To indicate the product's manufacturing date

3. To indicate the products' relative acute toxicity to humans and animals

4. To specify the mode of action of the pesticide

The correct answer is: To indicate the products' relative acute toxicity to humans and animals

The primary purpose of the signal word on a pesticide label is to indicate the product's relative acute toxicity to humans and animals. This information is crucial for understanding the potential risks associated with the pesticide’s use. Signal words are standardized and categorized as "Danger," "Warning," or "Caution," providing immediate insight into the levels of risk involved. For example, a label with the signal word "Danger" indicates a high level of acute toxicity, meaning that exposure could result in serious harm or death, while "Caution" suggests a lower level of toxicity where hazards are manageable with proper safety precautions. This allows users to make informed decisions about the safety measures necessary when handling the pesticide. The other choices provide information that is important but are not the main function of the signal word. Describing the product's ingredients or indicating the manufacturing date could be found elsewhere on the label, and specifying the mode of action relates to how the pesticide works rather than its toxicity level. Understanding the signal word helps users to prioritize safety and take appropriate protective actions.