The Question is from neet-botany anatomy-of-flowering-plants secondary-growth, and it was created by the author B VENKAT

Question

In which type of plants is secondary growth most prominent?

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Secondary growth in plants
 **Related Topics**: Vascular cambium, cork cambium, woody tissues, growth rings, plant anatomy
 **Prerequisites**: Understanding of primary and secondary growth in plants.
## SOLUTION PATHWAY
**Given Information**:
The question asks about the type of plants where secondary growth is most prominent.
**Method & Steps**:
1. Understanding Secondary Growth:
Secondary growth is the increase in girth or diameter of a plant.  It's responsible for the formation of wood and bark in woody plants. This growth is driven by the vascular cambium (producing secondary xylem and phloem) and the cork cambium (producing periderm).
2. Comparing Plant Types:
Monocotyledonous plants (monocots) typically exhibit limited or no secondary growth.  Their vascular bundles are scattered throughout the stem, and a well-defined vascular cambium is usually absent.  Dicotyledonous plants (dicots), on the other hand, possess a ring of vascular bundles in their stems, allowing for the development of a continuous vascular cambium. This cambium is crucial for substantial secondary growth.
3. Identifying the Most Prominent Case:
Dicotyledonous trees, due to their long lifespan and persistent growth, demonstrate the most prominent secondary growth.  They develop thick woody stems with extensive secondary xylem (wood) and phloem (inner bark).  Herbaceous plants (both monocots and dicots) have limited secondary growth, if any.
 Result: Dicotyledonous trees exhibit the most prominent secondary growth.
 Verification: The presence of a well-defined vascular cambium and the formation of extensive wood and bark are characteristic features of dicot trees, supporting the answer.
## OPTION ANALYSIS
A :x: Monocotyledonous herbs show minimal or no secondary growth.
B :x: Dicotyledonous herbs show limited secondary growth compared to trees.
C :x: Monocotyledonous trees may show some secondary growth, but it is less extensive than in dicotyledonous trees.
D ✓: Dicotyledonous trees exhibit the most prominent secondary growth due to the continuous activity of the vascular cambium.
## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing primary and secondary growth: Remember primary growth increases length, while secondary growth increases girth.
  2.Generalizing about all plants: Not all dicots show the same level of secondary growth; however, trees are the most prominent example.
 **Quick Tips**:
  1.Think about the characteristics of woody plants (trees):  The presence of wood and bark directly relates to secondary growth.
  2.Remember the role of the vascular cambium:  Its presence and activity are key to significant secondary growth.

B VENKAT · Answer

Monocotyledonous herbs

B VENKAT · Answer

Dicotyledonous herbs

B VENKAT · Answer

Monocotyledonous trees

B VENKAT · Answer

The correct Option is "Dicotyledonous trees"

NEET Botany Anatomy of Flowering Plants Secondary Growth MCQs

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