Which are the three types of poisonous plants?

• A. Poison Ivy, Poison Oak, Poison Sumac
• B. Poison Ivy, Poison Fern, Poison Sumac
• C. Poison Oak, Poison Heather, Poison Ivy
• D. Poison Sumac, Poison Oak, Poison Bane

Answer: (A)

This question tests your knowledge of the three plants most commonly recognized as poisonous to skin due to urushiol exposure. The best trio to remember is poison ivy, poison oak, and poison sumac. They’re the standard set because they are the classic sources of allergic contact dermatitis in many regions, and they’re frequently discussed together as the main culprits to avoid outdoors. The rash they cause is a well-known reaction, so identifying this trio helps you recognize risky plants in the field.

The other options include plants that aren’t typically categorized as poisonous in this context, so they don’t form the familiar three. Keep in mind a useful clue: these plants are often described with leaves arranged in three leaflets, which helps in recognizing the trio, even though leaf shapes can vary by species.