2.54 Transpiration

Heat from sunlight evaporate water from the surface of the plant (changes the liquid into gas) through a process called transpiration.

1. The sunlight warms the leaf.
2. Water travels into the leaf through the xylem.
3. Heat from the sunlight changes the liquid into gas, phase change occurs above the stomatal pores.
4. Evaporation through the stomatal pores down a diffusion gradient.
5. When the vapour leaves the stomatal pores it pulls another vapour particle with it and the pulling chain goes all the way down to the roots, this is how the plant transports the water.