The Question is from neet-botany cell-biology , and it was created by the author D VINOD

Question

Plasmodesmata are crucial for intercellular communication.  Which component of the cell wall is specifically disrupted during plasmodesmata formation?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Plant cell wall structure and plasmodesmata formation
 **Related Topics**: Cell communication, plant cell biology, cell wall components
 **Prerequisites**: Understanding of primary cell wall, secondary cell wall, and middle lamella.
## SOLUTION PATHWAY
**Given Information**:
  Plasmodesmata are channels that facilitate intercellular communication in plants.
  They traverse the cell wall.
**Method & Steps**:
 1. Identify the components of the plant cell wall.
  Reasoning: The plant cell wall is composed of three main layers: the middle lamella, the primary cell wall, and the secondary cell wall (which is not always present).
  Formula/Rule: N/A
 2. Consider which layer(s) must be modified to create a channel through the wall.
  Working: Plasmodesmata are formed during cell division and involve the modification of the cell wall to create channels that connect adjacent cells.  These channels pass through both the primary cell wall and the middle lamella.
  Key Point: The secondary cell wall is usually deposited *after* plasmodesmata formation and is therefore not directly involved in their initial creation.
 3. Determine the correct answer based on the disrupted wall layers.
  Result: The primary cell wall and the middle lamella are disrupted during plasmodesmata formation.
  Verification: Plasmodesmata are known to span both the primary cell wall and the middle lamella.  The secondary cell wall, if present, is formed later and does not directly participate in plasmodesmata formation.
 ## OPTION ANALYSIS
A :x: Secondary cell wall only: Incorrect. The secondary cell wall is not always present and is formed after plasmodesmata are established.
B :x: Primary cell wall only: Incorrect. Plasmodesmata also traverse the middle lamella.
C :x: Middle lamella only: Incorrect. Plasmodesmata also traverse the primary cell wall.
D ✓: Primary cell wall and middle lamella: Correct.  Plasmodesmata formation requires modification of both these layers to create a continuous channel between cells.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing the order of cell wall layer deposition: Remembering that the secondary cell wall is deposited after the primary cell wall and plasmodesmata formation is crucial.
  2.Overlooking the middle lamella's role: The middle lamella is essential for cell adhesion and is directly involved in plasmodesmata formation.
 **Quick Tips**:
  1.Visualize a plant cell wall cross-section to understand the spatial relationship of the three layers.
  2.Remember that plasmodesmata are channels connecting adjacent cells, requiring the modification of layers between them.

D VINOD · Answer

Secondary cell wall only

D VINOD · Answer

Primary cell wall only

D VINOD · Answer

Middle lamella only

D VINOD · Answer

The correct Option is "Primary cell wall and middle lamella"

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