Transpiration is the evaporation of water from the leaves of a plant.

• A. Transpiration
• B. Respiration
• C. Evaporation
• D. Precipitation

Answer: (A)

Transpiration is the plant-specific evaporation of water that occurs mainly from the leaves through stomata. The statement matches this process exactly: water leaves the leaf as vapor, driven by gas exchange needs. Transpiration helps pull water up from the roots through the xylem and also cools the plant. The other terms describe different ideas: respiration is the cellular process that releases energy from sugars, evaporation is general water turning to vapor from any surface, and precipitation is rainfall.