The process of evaporation of water to the atmosphere from the leaves of a plant in the form of water vapor is called transpiration. The water from the soil reaches the leaves by the tissue called Xylem. The root hairs on the root absorb water from the soil and through osmosis the water is transported to leaves through the tissue xylem. The excess of water in the plants is lost through transpiration. Stomata also helps in the transpiration, in which the loss of water from the surface of leaves in the form of water vapor.