Moving water up a plant from the roots to the leaves occurs by a combination of different processes (steps). The main process that draws water up the stem is..
a) osmosis
b) transpiration
c) diffusion
d) capillary action
Transpiration is ultimately the main driver of water movement in xylem. The cohesion-tension model works like this: Transpiration (evaporation) occurs because stomata are open to allow gas exchange for photosynthesis.
