Final answer:
Water potential is the combined effects of solute concentration and pressure potential; this determines water movement. It is influenced by factors such as solute concentration, pressure, gravity, and matric potential.
Step-by-step explanation:
Water potential is the combined effects of solute concentration and pressure potential; this determines water movement. Water potential (Y) is a measure of the difference in potential energy between a water sample and pure water. It is influenced by factors such as solute concentration, pressure, gravity, and matric potential.