What are the two types of toxicity?

• A. Acute and Chronic
• B. Immediate and Delayed
• C. Local and Systemic
• D. Short-term and Long-term

Answer: (A)

Toxicity is understood by how effects show up over time. The two main types are acute toxicity and chronic toxicity. Acute toxicity means harmful effects appear soon after a single exposure or a brief exposure, usually within hours, and the symptoms are often quick and sometimes severe. Chronic toxicity means harmful effects develop only after long-term or repeated exposure over months or years, with potential cumulative damage that may not be obvious right away. The other options describe either where the effect occurs (local vs systemic) or use vague time terms that aren’t the standard classifications, so they don’t fit as the formal categories used in pesticide testing.