ICSE Class 10 Answered

Plasmolysis

Deplasmolysis

Plasmolysis is the process of contracting the cell protoplasm due to the loss of water when placed in a hypertonic solution.

Deplasmolysis is the reverse of plasmolysis in which cell swells due to the absorption of water when placed in a hypotonic solution.

 Cause

Plasmolysis occurs due to exosmosis.

Deplasmolysis occurs due to endosmosis.

Protoplasm

Protoplasm shrinks during the Plasmolysis.

Protoplasm swells during the Deplasmolysis.

 Type of Solution

Plasmolysis occurs when the plant cell is placed in a hypertonic solution.

Deplasmolysis occurs when a plant cell is placed in a hypotonic solution.

Water Movement

Water molecules lose from the cell to the outside during the plasmolysis.

Water molecules enter the cell during deplasmolysis.

Water Potential

The cell has a higher water potential than the outside solution during the plasmolysis.

The cell has a lower water potential than the outside solution during deplasmolysis.

Osmotic Pressure of the Cell

Osmotic pressure is low in the cell due to plasmolysis.

Osmotic pressure is high in the cell due to deplasmolysis.

Effect

Plasmolysis causes plants to wilt.

Deplasmolysis restore the turgidity of the plants.