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Question #47636
The Question
In the thylakoid membrane, accessory pigments function analogously to MacArthur's warblers partitioning ecological niches; they capture distinct wavelengths of light to maximize resource utilization and prevent 'physiological overcrowding'. Which of the following statements regarding the role of these pigments in the Light-Harvesting Complex (LHC) is INCORRECT?
Options
- A.
They broaden the action spectrum of photosynthesis by absorbing wavelengths outside the primary absorption peaks of chlorophyll-a.
- B.
They funnel captured photon energy toward the reaction center chlorophyll-a via resonance energy transfer.
- C.
They protect the reaction center from photo-oxidation by safely dissipating excess excitation energy under high light intensity.
- D.
They prevent photo-damage by acting as alternative electron acceptors when the primary electron acceptor of the photosystem is saturated.
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
Chlorophyll-a|Carotenoids|Xanthophylls|Resource Partitioning
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Differentiating between 'Excitation Energy Transfer' (Antenna Complex) and 'Electron Transfer' (Reaction Center).
Common Misconception: Students often conflate the photoprotective energy-quenching role of carotenoids with the redox role of electron carriers, assuming accessory pigments can absorb 'overflow electrons' during high light stress.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Photosynthesis in Higher Plants - Class 11 |
| Concept | Chlorophyll-a vs Accessory Pigments |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |