Because of cohesion and transpiration, water is able to move against the slow of gravity in plants. The attraction of water to other water molecules allows water to pull other water molecules up through the xylem.
Cohesion: When water molecules stick to one another through cohesion, they fill the column in the xylem and act as a huge single molecule of water (like water in a straw). Capillary action: Capillary action is the movement of a liquid across the surface of a solid caused by adhesion between the two.
