The Question is from neet-botany anatomy-of-flowering-plants , and it was created by the author K SURESH KUMAR

Question

In which specific plant structures would you LEAST expect to find collenchyma tissue?

K SURESH KUMAR · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Plant tissue types and their locations
 **Related Topics**: Plant anatomy, cell types, tissue differentiation
 **Prerequisites**: Basic understanding of plant tissues (parenchyma, collenchyma, sclerenchyma)
## SOLUTION PATHWAY
**Given Information**:
The question asks where collenchyma tissue is LEAST likely to be found.
**Method & Steps**:
1. **Understanding Collenchyma**: Collenchyma tissue is a type of ground tissue that provides flexible support to young, growing parts of plants.  It's characterized by cells with unevenly thickened cell walls made of cellulose and pectin.
2. **Analyzing Options**: Let's examine each option:
    * **A. Beneath the epidermis of young stems:** Collenchyma is commonly found here, providing support to growing stems.
    * **B. In the petioles of leaves:**  Collenchyma is often present in petioles (leaf stalks) for support.
    * **C. Supporting the veins of leaves:** Collenchyma can provide support to leaf veins, though sclerenchyma is also involved.
    * **D. Mature vascular bundles of woody stems:**  In mature woody stems, collenchyma is largely replaced by sclerenchyma (fibers and sclereids) which provide stronger, more rigid support.  Collenchyma is associated with growth and flexibility, which is less needed in mature, rigid woody tissues.
3. **Conclusion**: Mature vascular bundles of woody stems are the location where you would LEAST expect to find collenchyma tissue because the plant has transitioned to a more rigid support system.
  Result: D
  Verification: Collenchyma's role in flexible support aligns with its presence in young, growing tissues.  Mature woody stems require stronger, more permanent support provided by sclerenchyma.
 ## OPTION ANALYSIS
A ✓: Collenchyma is commonly found beneath the epidermis of young stems for support.
B :x: Collenchyma provides flexible support in petioles.
C :x: Collenchyma may support leaf veins, but sclerenchyma also plays a role.
D :x: Mature woody stems have largely replaced collenchyma with the stronger sclerenchyma for rigid support.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing collenchyma with sclerenchyma:  Remember that collenchyma provides flexible support, while sclerenchyma provides rigid support.
  2.Assuming collenchyma is present everywhere in plants: Collenchyma is primarily found in young, actively growing plant parts.
 **Quick Tips**:
  1.Associate collenchyma with flexibility and growth.
  2.Remember that sclerenchyma takes over support functions in mature woody tissues.

K SURESH KUMAR · Answer

Beneath the epidermis of young stems

K SURESH KUMAR · Answer

In the petioles of leaves

K SURESH KUMAR · Answer

Supporting the veins of leaves

K SURESH KUMAR · Answer

The correct Option is "Mature vascular bundles of woody stems"

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