2.54 Transpiration

Recall that transpiration is the evaporation of water from the surface of the plant.
- H20 (water) turns into a Gas by evaporation from heat and light.
- Water is taken up in the root systems by osmosis.
- Water travels up through the stem out through petiole.
- Sunlight warms the leaf to create heat so water can change to gas.
- Water is then evaporated through the stomatal pores.
- Water leaves the leaf due to the diffusion from a high humidity (100%) to a lower humidity in the air.