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Question #45963
The Question
A rosette plant is treated with exogenous to induce bolting. However, the plant is growing in a soil medium that is severely deficient in Calcium. Which of the following best describes the resulting physiological fallout during this resource allocation shift?
Options
- A.
Rapid remobilization of Calcium from older leaves to the elongating internodes, causing premature senescence of the lower foliage.
- B.
Severe necrosis of the apical meristem and reproductive failure, as Calcium cannot be translocated to the newly established, rapidly growing sink.
- C.
Normal bolting followed by successful flowering, because directly stimulates the synthesis of the middle lamella independent of Calcium.
- D.
Stunted internodal elongation accompanied by interveinal chlorosis in older leaves, as reverses the normal source-sink relationship.
Check Your Answer
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
GA3|Nitrogen_Mobility|Senescence|Growth_Rate
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often memorize 'GA causes bolting' and 'Calcium is immobile' as isolated facts.
The trap lies in failing to synthesize them: a hormone-induced growth spurt creates an intense sink that strictly requires structural nutrients.
If the required nutrient is immobile, the plant's attempt to 'bolt' leads to apical death, testing the student's grasp of source-sink dynamics under nutrient constraints.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Plant Growth and Development - Class 11 |
| Concept | Gibberellin Bolting Logic |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |