The Question is from neet-botany anatomy-of-flowering-plants , and it was created by the author D VINOD

Question

The flexibility of collenchyma tissue is primarily attributed to:

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Plant tissue structure and function
 **Related Topics**: Cell wall composition, plant cell types, mechanical strength in plants
 **Prerequisites**: Basic understanding of plant cell structure and the roles of different cell wall components.
## SOLUTION PATHWAY
**Given Information**:
  The question asks about the primary attribute contributing to the flexibility of collenchyma tissue.
**Method & Steps**:
 1. Analyze the options provided and consider the role of each component in cell wall structure and flexibility.
  Reasoning: Collenchyma cells provide flexible support to growing plant parts.  Their flexibility is a result of their specific cell wall composition.
 2. Evaluate each option based on its contribution to cell wall flexibility:
  Working:
  * **Option A (Lignin):** Lignin provides rigidity and strength, not flexibility. It's found in sclerenchyma cells, not collenchyma.
  * **Option B (Thin cell walls):** Thin cell walls themselves don't necessarily imply flexibility. The composition of the wall is crucial.
  * **Option C (Pectin and hemicellulose):** Pectin and hemicellulose are polysaccharides that contribute to the plasticity and extensibility of the cell wall. They allow the cell wall to stretch and bend without breaking.
  * **Option D (Intercellular spaces):** Intercellular spaces contribute to gas exchange and some flexibility, but the primary contributor to the flexibility of collenchyma is the composition of its cell wall.
  Key Point: Collenchyma cells have unevenly thickened cell walls, primarily composed of cellulose, pectin, and hemicellulose.  This allows for flexibility and support.
 3. Conclude based on the analysis of each option.
  Result: Option C is the correct answer because the combination of pectin and hemicellulose is the primary reason for collenchyma's flexibility.
  Verification: The characteristic flexibility of collenchyma is directly linked to the presence of pectin and hemicellulose in the cell wall, allowing for stretching and bending without fracture.
 ## OPTION ANALYSIS
A :x: The presence of lignin is associated with rigidity, not flexibility. Collenchyma cells lack significant lignin.
B :x: Thin cell walls can contribute to some flexibility, but the composition of the wall material is more important for the specific flexibility of collenchyma.
C ✓: The combination of pectin and hemicellulose provides the extensible and plastic properties that give collenchyma its flexibility.
D :x: Intercellular spaces contribute to gas exchange and some flexibility, but the primary reason for collenchyma's flexibility is the composition of its cell walls.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing collenchyma with sclerenchyma: Sclerenchyma cells are rigid due to lignin, while collenchyma cells are flexible.
  How to avoid: Focus on the distinct characteristics of each cell type and their respective roles in plant support.
  2.Overemphasizing thin cell walls: While thin walls might seem flexible, the composition of the wall material is critical for the type of flexibility exhibited by collenchyma.
  How to avoid: Understand that the flexibility is due to the specific polysaccharides in the cell wall, not just the thickness.
 **Quick Tips**:
  1.Remember that collenchyma cells provide flexible support, while sclerenchyma cells provide rigid support.
  2.Think of pectin as a flexible 'glue' holding the cell wall together, allowing for stretching and bending.

D VINOD · Answer

The presence of lignin in the cell wall

D VINOD · Answer

The thin cell walls

D VINOD · Answer

The correct Option is "The combination of pectin and hemicellulose in the cell wall"

D VINOD · Answer

The intercellular spaces present between the cells

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