2.54 Transpiration

Recall that transpiration is the evaporation of water from the surface of the plant.
Liquid --heat/sunlight--> Gas
In order for the water in the plant to turn into a gas, it will need heat. Heat is absorbed by the plant through the leaves in the form of sunlight.
excess gas diffuses out of the stomatal pores.
As sunlight enters the leaf for photosynthesis and the water is spread around the spongy mesophyll, the water is heated up by the sunlight, turning it into a gas. this occurs near the stomatal pore to allow it to evaporate out of the leaf.