The process by which plants lose water through stomata is called transpiration. Stomata are tiny openings on the surfaces of leaves that allow for gas exchange—specifically the intake of carbon dioxide and the release of oxygen and water vapor. During transpiration, water is absorbed by plant roots from the soil, then travels through the plant's vascular system to the leaves. When stomata open, water vapor escapes into the atmosphere, helping to cool the plant and enabling nutrient uptake. This process is vital for maintaining water balance and promoting photosynthesis in plants.