Question:
The process of plasmolysis occurs when:
The process of plasmolysis occurs when:
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"Plasmolysis" = "Plasma" membrane "Lysis" (shrinking) due to water leaving.
Updated On: May 5, 2026
- Water moves into the cell
- Water moves out of the cell
- No movement of water
- Cell wall dissolves
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The Correct Option is B
Solution and Explanation
Step 1: Concept
Plasmolysis is a phenomenon related to osmosis and the movement of water across the semi-permeable plasma membrane of a plant cell.
Step 2: Meaning
It is the shrinkage of the protoplast away from the cell wall.
Step 3: Analysis
When a plant cell is placed in a hypertonic solution (a solution with a higher solute concentration than the cell sap), water moves out of the cell due to osmosis. This loss of turgor pressure causes the cytoplasm to contract.
Step 4: Conclusion
The outward movement of water (exosmosis) is the direct cause of the shrinkage observed in plasmolysis. Final Answer: (B)
Plasmolysis is a phenomenon related to osmosis and the movement of water across the semi-permeable plasma membrane of a plant cell.
Step 2: Meaning
It is the shrinkage of the protoplast away from the cell wall.
Step 3: Analysis
When a plant cell is placed in a hypertonic solution (a solution with a higher solute concentration than the cell sap), water moves out of the cell due to osmosis. This loss of turgor pressure causes the cytoplasm to contract.
Step 4: Conclusion
The outward movement of water (exosmosis) is the direct cause of the shrinkage observed in plasmolysis. Final Answer: (B)
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