8.3 Transpiration

• Transpiration:

  The loss of water vapor from the leaves
• The higher the temperature the greater the kinetic energy of water molecules and the greater the rate of evaporation leading to higher transpiration.
• High humidity decreases the water potential gradient between the leaf and the atmosphere and the rate of transpiration decreases.
• Wind speed: Removing water molecules will maintain a steep concentration.
• Transpiration Stream: The movement of water from the roots to the leaves through the xylem.
• Transpiration pull: the suction, force or pull that draws water up through the plant.
• Wilting: The process of losing water from the plant and causing the plant to wilt.