The phenomenon by which protoplast of a cell shrinks from the wall is calleda)Osmosisb)Plasmolysisc) Diffusiond) GlycolysisCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Bcoz, plasmolysis is tge process by which cells shrink away from its wall due to water loss.

Answer

Bcoz it's given in the textbook

Answer

Osmosis

Answer

Plasmolysis is the process in which protoplast of the cell shrinks from the wall.

Answer

Plasmolysis

Answer

Plasmolysis is the phenomenon by which the protoplast of a cell shrinks from the cell wall. It occurs when a plant cell is placed in a hypertonic solution, meaning the solution has a higher solute concentration compared to the inside of the cell. Plasmolysis is an important process that helps us understand the movement of water in and out of plant cells.

Explanation of Plasmolysis:
1. Hypertonic Solution:
- When a plant cell is placed in a hypertonic solution, such as a concentrated salt or sugar solution, the solute concentration outside the cell is higher than inside the cell.
- This creates a concentration gradient, causing water to move out of the cell through the cell membrane.

2. Loss of Water:
- As water moves out of the cell, the cell's protoplast, which includes the cytoplasm and cell membrane, starts to shrink away from the cell wall.
- The cell membrane becomes detached from the cell wall, resulting in a gap between them.
- This process is known as plasmolysis.

3. Shrinking of Protoplast:
- The shrinking of the protoplast occurs because the cell loses water due to osmosis.
- Osmosis is the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration across a selectively permeable membrane, such as the cell membrane.

4. Effects of Plasmolysis:
- Plasmolysis can have detrimental effects on the plant cell.
- As the protoplast shrinks, the cell membrane may become damaged or disrupted.
- The cell loses its turgidity, which is the pressure exerted by the cell contents against the cell wall.
- This can lead to wilting and eventually cell death if the plasmolysis is severe and prolonged.

In conclusion, plasmolysis is the process in which the protoplast of a plant cell shrinks away from the cell wall due to the loss of water when the cell is placed in a hypertonic solution. This phenomenon occurs as a result of osmosis, the movement of water from areas of lower solute concentration to higher solute concentration. Plasmolysis can have detrimental effects on the cell and may lead to wilting and cell death.

Similar Class 9 Doubts

What do we mean by endosmosis? what is the difference between endosmosis, Exosmosis, osmosis and plasmolysis? are they all related to diffusion of water?

Explain the phenomenon of plasmolysis in plant cells?

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