Theory:

Osmosis:
The movement of solvent or water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane is known as osmosis.
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Osmosis
 
This process occurs till equilibrium is attained. It is a passive process (energy is not utilized) in which the movement of water or any other solvents is observed.
Types of solutions:
Based on the concentrations of solute solutions are of three types:
 
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Types of solutions
  
1. Hypertonic: When the concentration of the external environment of the cell is greater than the environment inside the cell is known as hypertonic.
 
2. Isotonic: When the external and internal environment of the cell are equal is known as isotonic.
 
3. Hypotonic: When the concentration of the internal environment of the cell is higher than the external environment is known as hypertonic.
 
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Various conditions of solutions
Plasmolysis:
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Plasmolysed cell
  
It is a process that occurs when a living plant cell is placed inside a hypertonic solution. During this, the water molecule moves out of the cell resulting in the shrinkage of protoplasm away from the cell wall.
 
Plasmolysis
Reference:
https://www.freepik.com/free-vector/diagram-showing-osmosis-plant-cell_5982972.htm