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Question #46245
The Question
A biennial rosette plant is treated with a specific phytohormone that bypasses its obligate low-temperature requirement, inducing premature bolting and inflorescence development. Regarding this physiological shift and its ecological consequences, which of the following statements is INCORRECT?
Options
- A.
The applied hormone is a terpene derivative that acts as a functional surrogate for vernalization.
- B.
The natural cold stimulus, which is normally perceived by the mature leaves, is completely bypassed by this treatment.
- C.
Premature flowering decoupled from seasonal cues creates a phenological mismatch, likely reducing cross-pollination success.
- D.
The natural low-temperature requirement prevents precocious reproductive development late in the growing season.
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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
Vernalization|Inflorescence|Gibberellin
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students frequently confuse the anatomical site of perception for Vernalization (shoot apex/embryo) with that of Photoperiodism (mature leaves).
The question synthesizes core NCERT physiological facts (GA substituting for cold treatment) with higher-order ecological consequences (phenological mismatch and pollinator asynchrony).
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Morphology of Flowering Plants - Class 11 |
| Concept | Inflorescence Types |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |