The Question is from neet-botany plant-physiology , and it was created by the author Mr. NARESH KUMAR K

Question

Plasmolysis is a reversible process. What is the process called when a plasmolyzed cell is placed in a hypotonic solution?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
 **Primary Concept**: Plasmolysis and Deplasmolysis
 **Related Topics**: Osmosis, Tonicity, Cell membrane, Water potential
 **Prerequisites**: Understanding of osmosis, hypotonic, hypertonic and isotonic solutions.
## SOLUTION PATHWAY
**Given Information**:
  Plasmolysis is a reversible process.
A plasmolyzed cell is placed in a hypotonic solution.
**Method & Steps**:
 1. Understanding Plasmolysis:
  Reasoning: Plasmolysis occurs when a plant cell is placed in a hypertonic solution.  Water moves out of the cell via osmosis, causing the cell membrane to shrink away from the cell wall.
  Formula/Rule:  No specific formula, but understanding of water movement due to osmosis is crucial.
 2. Effect of Hypotonic Solution:
  Working: A hypotonic solution has a lower solute concentration than the cell's cytoplasm. When a plasmolyzed cell (where the cytoplasm has shrunk) is placed in a hypotonic solution, water moves into the cell by osmosis.
  Key Point: The movement of water into the cell causes the cell membrane to expand and regain its original shape, reversing plasmolysis.
 3. Deplasmolysis:
  Result: The process of reversing plasmolysis by placing a plasmolyzed cell in a hypotonic solution is called deplasmolysis.
  Verification: The definition of deplasmolysis aligns perfectly with the described process.
 ## OPTION ANALYSIS
A :x: Hemolysis is the rupture of red blood cells due to placement in a hypotonic solution. This is not relevant to the reversal of plasmolysis in plant cells.
B ✓: Deplasmolysis is the correct term for the reversal of plasmolysis.
C :x: Endocytosis is the process of cells engulfing materials from their surroundings. It's not directly related to the reversal of plasmolysis.
D :x: Exocytosis is the process of cells releasing materials to their surroundings. It's not directly related to the reversal of plasmolysis.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing plasmolysis with cytolysis (bursting of cells): Plasmolysis only involves shrinkage, not bursting.
  2.Misunderstanding tonicity:  Remember that water moves from hypotonic to hypertonic solutions.
 **Quick Tips**:
  1.Remember the prefixes:  'hypo' means less, 'hyper' means more, 'iso' means equal (in terms of solute concentration).
  2.Visualize the process: Imagine a balloon (cell membrane) shrinking inside a container (cell wall) and then expanding again when placed in water.

Mr. NARESH KUMAR K · Answer

Hemolysis

Mr. NARESH KUMAR K · Answer

The correct Option is "Deplasmolysis"

Mr. NARESH KUMAR K · Answer

Endocytosis

Mr. NARESH KUMAR K · Answer

Exocytosis

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