The force that moves water into space where solute more concentrated is called osmosis. Osmosis is the net movement of water molecules from a region of lower solute concentration into a region of higher solute concentration through a selectively permeable membrane. The selectively permeable membrane allows water molecules to pass through but blocks the passage of solute molecules.

Osmosis is a vital process in living organisms. It helps maintain the proper water balance in cells and tissues, and it plays a role in the absorption of nutrients and the removal of waste products.