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Question #46836
The Question
Analyze the following statements regarding vascular tissue organization and the initiation of secondary growth in angiosperms. Which of the following statements is INCORRECT?
Options
- A.
In dicot stems, the continuous cambial ring is of dual origin, formed by both primary (intrafascicular) and secondary (interfascicular) meristems.
- B.
The closed conjoint vascular bundles in monocot stems lack intrafascicular cambium, fundamentally constraining the formation of a vascular cambial ring.
- C.
In the radial vascular bundles of dicot roots, the intrafascicular cambium dedifferentiates to initiate the formation of a continuous, wavy cambial ring.
- D.
The vascular cambium in dicot roots is completely secondary in origin, arising from conjunctive tissue below the phloem and a portion of the pericycle.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Radial vs Conjoint Bundles|Cambial Ring Formation|Vascular Bundle Openness
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often conflate the mechanism of secondary growth in stems with that in roots.
The trap relies on the term 'intrafascicular cambium'—students memorize that it initiates the cambial ring in stems, but fail to synthesize that radial bundles (roots) do not have conjoint fascicles with internal cambium.
Recognizing the structural incompatibility between 'radial bundles' and 'intrafascicular cambium' is the key to solving this.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Anatomy of Flowering Plants - Class 11 |
| Concept | Radial vs Conjoint Bundles |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |