2.54 Transpiration

• Transpiration is a process like evaporation.
• it is the loss of water vapor from parts of the plants. (similar to sweating)
• Leaf transpiration occurs through stomata.
• The openings in the stomata are what allows the vapor to escape and to allow other things in such as C02.
• Transpiration also cools plants and allows mass flow of mineral nutrients and water from the roots.