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Question #46221
The Question
Decapitation (removal of shoot tips) is a standard practice in tea plantations to promote bushier growth. Which of the following statements regarding the physiological and hormonal basis of this practice is INCORRECT?
Options
- A.
It eliminates the primary source of auxin, thereby disrupting its basipetal transport down the stem.
- B.
The subsequent drop in auxin concentration at the nodes releases axillary buds from apical dominance.
- C.
It alters the hormonal balance, allowing the effects of acropetally transported cytokinins to dominate at the lateral buds.
- D.
It removes the inhibitory effect of auxins that are actively transported in an acropetal direction from the apical meristem.
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Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Stem Morphological Markers|Auxin Polarity|Meristematic Polarity
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Directional terminology in polar hormone transport.
Students often memorize the cause-and-effect of decapitation (removing auxin causes branching) but confuse 'basipetal' (apex to base, typical of shoot auxins) with 'acropetal' (base to apex, typical of root cytokinins).
Option D exploits this functional and directional confusion.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Morphology of Flowering Plants - Class 11 |
| Concept | Stem Morphological Markers |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |