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

Question

Which tissue in the stem provides mechanical support and flexibility?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Plant Tissues and their Functions
 **Related Topics**: Stem anatomy, cell types, mechanical strength in plants
 **Prerequisites**: Basic understanding of plant cell types and their properties.
## SOLUTION PATHWAY
**Given Information**:
The question asks about the plant tissue responsible for mechanical support and flexibility in the stem.
**Method & Steps**:
1. Identify the different plant tissues mentioned in the options.
  Reasoning: We need to understand the function of each tissue type to determine which one provides both mechanical support and flexibility.
  Formula/Rule: None directly applicable.
 2. Analyze the properties of each tissue type.
  Working:
  * Parenchyma: These are thin-walled cells involved in storage, photosynthesis, and secretion. They do not provide significant mechanical support.
  * Sclerenchyma: These cells have thick, lignified walls and provide structural support, but they are rigid and lack flexibility.
  * Collenchyma: These cells have unevenly thickened cell walls made of pectin and cellulose. They provide flexible support, particularly in young stems and leaves.
  * Xylem: This tissue is primarily involved in water transport. While it provides some support, it is primarily rigid rather than flexible.
  Key Point:  The key difference lies in the nature of the support provided. Sclerenchyma provides rigid support, while collenchyma provides flexible support.
 3. Select the tissue that best fits the description.
  Result: Collenchyma is the tissue that provides both mechanical support and flexibility in the stem.
  Verification: Collenchyma's flexible cell walls allow the stem to bend without breaking, while still providing structural support.
 ## OPTION ANALYSIS
A :x: Parenchyma cells are involved in storage and photosynthesis, not primarily mechanical support.
B :x: Sclerenchyma provides strong support but is rigid and not flexible.
C ✓: Collenchyma cells provide flexible support due to their unevenly thickened cell walls.
D :x: Xylem is primarily responsible for water transport, not flexible support.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing collenchyma with sclerenchyma: Remember that collenchyma is flexible, while sclerenchyma is rigid.
  2.Overlooking the 'flexibility' aspect:  Many might choose sclerenchyma due to its support function, but it lacks flexibility.
 **Quick Tips**:
  1.Think of young, actively growing stems; these often rely on collenchyma for support.
  2.Remember the 'co' in collenchyma can be associated with 'flexible' support.

Mr. NARESH KUMAR K · Answer

Parenchyma

Mr. NARESH KUMAR K · Answer

Sclerenchyma

Mr. NARESH KUMAR K · Answer

The correct Option is "Collenchyma"

Mr. NARESH KUMAR K · Answer

Xylem

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