What term describes a herbicide that kills a broad spectrum of plants?

• A. Localized
• B. Nonselective
• C. Systemic
• D. Contact

Answer: (B)

The main idea here is the range of plants a herbicide will affect. A nonselective herbicide kills a wide variety of plants, making it broad-spectrum. It doesn’t distinguish between grasses, broadleaf plants, or crops, so it will harm many species if not used carefully. This contrasts with selective herbicides, which are designed to target specific plant groups to protect other vegetation. Systemic refers to how the chemical moves inside a plant after absorption, and contact means it kills only the parts it touches on the surface. The term that best fits the description of killing a broad spectrum of plants is nonselective. Localized doesn’t describe breadth of impact and isn’t the standard term for this concept.