What is the definition of a non-selective or broad-spectrum pesticide?

What is the definition of a non-selective or broad-spectrum pesticide?

• A. A pesticide that affects only a single species
• B. A pesticide that affects many species, including target and beneficial pests
• C. A pesticide with low toxicity
• D. A pesticide that degrades quickly

Answer: (B)

Non-selective or broad-spectrum pesticides are defined by their wide impact: they affect many species, not just the targeted pest. This means they can kill or harm a range of organisms, including beneficial insects and other non-target species that help keep ecosystems in balance. That makes this description the best fit for non-selective pesticides, since the key idea is breadth of action across multiple species rather than targeting a single organism. In contrast, a pesticide that only targets one species would be selective, while properties like low toxicity or rapid degradation describe safety or environmental persistence, not how many species are affected. Broad-spectrum products are powerful for quickly reducing several pests but require careful use to avoid harming beneficial organisms and disrupting natural pest control.

Non-selective or broad-spectrum pesticides are defined by their wide impact: they affect many species, not just the targeted pest. This means they can kill or harm a range of organisms, including beneficial insects and other non-target species that help keep ecosystems in balance. That makes this description the best fit for non-selective pesticides, since the key idea is breadth of action across multiple species rather than targeting a single organism. In contrast, a pesticide that only targets one species would be selective, while properties like low toxicity or rapid degradation describe safety or environmental persistence, not how many species are affected. Broad-spectrum products are powerful for quickly reducing several pests but require careful use to avoid harming beneficial organisms and disrupting natural pest control.