Answer:
Osmosis
Step-by-step explanation:
I believe you are asking the concept in which water tends to move in a cell, which is called osmosis.
Cells have semipermeable membranes, which means that not all substances are able to enter or leave the cell.
Osmosis permits the movement of a solvent across this semipermeable membrane (see image below). During this process, water moves from an area of high concentration to an area of lower concentration of water.