Plasmolysis : If a cell is placed in a solution having a higher concentration than the concentration of cell sap inside the cell, then by exosmosis cell sap will begin to come in external solution and cell begins to lose its turgidity and begin to shrink. In the end, the protoplasm will shrink and leave this wall and round off. This shrinking of protoplasm is called plasmolysis.
· Normal cell
· Contraction of vacuole
· Construction of plasm membrane
· Shunken round of cell.