2 54 Transpiration

Recall the transpiration in the evaporation of water from a surface of a plant. 

Evaporation will occur when go from liquid to gas. We will need Heat for this process. In addition to this heat is provided by sunlight.

Sunlight absorbed the leaf structure. So the light energy will be converted into hear.

The evaporation is through the stomatol pore.

Sunlight will have to go through the process of photosynthesis. + Not all lights will be absorbed in the chloroplast.

Above the stomatol pore there is phases change from liquid to gas à gas diffuses through the pore by a fairly steep diffusion gradient.