Problem: The drug digitalis comes from which plant ?
Answer: foxglove

Problem: The areca nut (often with betel leaf), a popular stimulant in Asia, is traditionally prepared for?
Answer: chewing

Problem: What was the nickname of the largest fixed-wing flying boat ever built, the Hughes H-4 Hercules, flown by Howard Hughes in November 1947, for just eight minutes, its only ever flight?
Answer: spruce goose

Problem: "The ""loop of Henle"" is found where in the human body?"
Answer:
kidney