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

Question

Which part of the cell shrinks during plasmolysis?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
	**Primary Concept**: Plasmolysis
	**Related Topics**: Cell structure, osmosis, water potential, turgor pressure
	**Prerequisites**: Understanding of cell components (cell wall, vacuole, protoplast, nucleus) and the process of osmosis.
## SOLUTION PATHWAY
**Given Information**:
	The question asks which part of the cell shrinks during plasmolysis.
	Plasmolysis is the process in which cells lose water in a hypertonic solution.
**Method & Steps**:
	1. Understand Plasmolysis: Plasmolysis occurs when a plant cell is placed in a hypertonic solution (a solution with a higher solute concentration than the cell's cytoplasm). Water moves out of the cell via osmosis, causing the cell's contents to shrink away from the cell wall.
	2. Identify the Shrinking Component: The cell wall is rigid and doesn't shrink. The vacuole, being the largest component of the cell, loses water and shrinks significantly. The protoplast (the cytoplasm and the plasma membrane) shrinks as water is lost from the vacuole and cytoplasm.
	3. Analyze the Options: The cell wall remains relatively unchanged. The vacuole shrinks, contributing to the overall shrinkage of the protoplast. The nucleus also shrinks, but to a lesser extent compared to the vacuole and the protoplast.
		Result: The protoplast, encompassing the cytoplasm and plasma membrane, experiences the most noticeable shrinkage during plasmolysis.
		Verification: This aligns with the understanding of osmosis and the structural components of plant cells.
## OPTION ANALYSIS
A :x: The cell wall is rigid and does not shrink during plasmolysis. 
B :x: The vacuole shrinks, but the protoplast experiences a more significant overall shrinkage.
C ✓: The protoplast (cytoplasm and plasma membrane) shrinks due to water loss during plasmolysis. 
D :x: While the nucleus might experience some shrinkage, the protoplast shows the most significant change.
## LEARNING AIDS
	**Common Mistakes**:
		1. Confusing the roles of the cell wall and the cell membrane: The cell wall provides structural support, while the cell membrane regulates the movement of substances.  Understanding the difference is key to understanding plasmolysis.
		2. Incorrectly identifying the primary location of water loss: Water loss primarily occurs from the vacuole, leading to the shrinkage of the protoplast.
	**Quick Tips**:
		1. Visualize a plant cell undergoing plasmolysis – the protoplast pulling away from the cell wall is a key visual cue.
		2. Remember that the protoplast includes the cytoplasm and cell membrane – both of which shrink during plasmolysis.

Mr. NARESH KUMAR K · Answer

Cell wall

Mr. NARESH KUMAR K · Answer

Vacuole

Mr. NARESH KUMAR K · Answer

The correct Option is "Protoplast"

Mr. NARESH KUMAR K · Answer

Nucleus

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