Water Movement in Plants Water moves up the xylem of plants due to the 5 functions/forces. Transpirational pull Adhesion Cohesion Capillarity Osmotic pressure

Transpirational pull: water evaporates from the leaves and creates an upward pull felt along the xylem (using a straw)

Adhesion: the attraction of unlike molecules that cause water molecules to be attracted to the walls of xylem tubes

Cohesion: the polarity of water molecules causes an attraction between water molecules which helps pull up water in the xylem

Capillarity: the ability of water to easily move up a tube because it is narrow compared to a very wide tube

Osmotic pressure: difference in pressure that builds because the endodermis lets water in but not out