The force which causes the upward movement of water from the roots to the leaves is called transpirational pull. Water travels through the stem of a plant by transpirational pull.
Diffusion is the movement of a substance from an area of high concentration to an area of low concentration.
The process through which liquid water is converted to vapour is called as evaporation.
Capillary action is the movement of water in porous materials through process like cohesion, adhesion, etc.,