QAL Laws & Regulation Practice Exam

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Prepare for the QAL Laws and Regulation Test. Use our comprehensive review material with multiple-choice questions and in-depth explanations. Ensure your success!

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What characterizes a contact pesticide?

It works systemically within plants
It kills pests upon physical contact
It requires ingestion by the pest to be effective
It is used only on indoor pests

The correct answer is: It kills pests upon physical contact

A contact pesticide is characterized by its mode of action, which is to kill pests upon physical contact. These types of pesticides act rapidly when they come into direct contact with the target pest, disrupting its biological systems and leading to a quick death. This immediate effect distinguishes contact pesticides from others, such as systemic pesticides, which are absorbed into the plant and provide control over pests that ingest the plant material. Since contact pesticides do not require ingestion to be effective, they are often used in situations where the pest is exposed to the pesticide through surface contact. The classification as a contact pesticide does not imply limitations on pest types (indoor or outdoor), thus ruling out any options that suggest restrictions based on pest environments or feeding habits. The emphasis is purely on the mechanism of action being based on direct contact rather than systemic absorption or ingestion.