Question

Differentiate between plasmolysis and deplasmolysis?

Answer 1

Hint: Plasmolysis usually refers to loss of protoplasm or water from the cell and deplasmolysis refers to the entrance of water into the cell. Plasmolysis is the breakdown of the plasma under the hypertonic solution and the deplasmolysis occurs due to deposition of plasma in the cell wall.

Complete answer:

Plasmolysis	Deplasmolysis
It is the process of loss of protoplasm from the cell wall.	It is the process of entrance of water into the cell wall.
It occurs when a cell is placed in a hypertonic solution.	It occurs in a hypotonic solution.
Plasmolysis is the result of exosmosis.	Deplasmolysis is the result of endosmosis.
It involves the shrinkage of protoplast due to hypertonic solution.	It involves the swelling of protoplast to come intact with the cell wall.
It is an irreversible process.	It is a reversible process.

Additional information:
• Exosmosis: It is the process of solvent from inside to outside of a solution when placed in a hypertonic solution.
• Endosmosis: It is the movement of solvent from inside the cell when placed in a hypotonic solution.
•Plasmolysis is the movement of water molecules out of the cell and shrinking of the membrane of the cell wall when placed in a hypertonic solution. Net flow of water in plasmolysis is positive and the result of which cell mass and size increases, causing cell turgidity.
• Deplamolysis is the process of entrance of water into a plasmolysed cell and other membrane under normal conditions.

Note: Hypertonic solution here refers to the solution having more dissolved particles. And hypotonic solution refers to the lower concentrated solutes comparative to other solutions.