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Question #47612
The Question
Under optimal environmental conditions, a plant exhibits high photosynthetic efficiency, diverting a major fraction of its triose phosphate pool towards the synthesis of structural carbohydrates like lignin and cellulose in its leaves. When this foliage eventually falls and forms detritus, which of the following ecological consequences is most likely to occur?
Options
- A.
The detritus will possess a low C:N ratio, accelerating the rate of mineralization by soil microbes.
- B.
The decomposition rate will be significantly retarded due to a higher C:N ratio, shifting the balance towards humification.
- C.
The abundance of structural carbohydrates will increase the water-soluble fraction of the detritus, promoting rapid leaching.
- D.
Catabolism by fungal enzymes will be completely inhibited, preventing the formation of dark-colored amorphous humus.
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
C3 Cycle Stoichiometry|Decomposition Rate Modifiers|Humification vs Mineralization
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Bridging Plant Physiology with Ecosystem Dynamics.
Students often assume that higher photosynthetic output creates 'high-energy' detritus that decomposes rapidly.
However, they must synthesize the fact that carbon allocated to structural carbohydrates (lignin/cellulose) increases the C:N ratio.
This acts as a chemical bottleneck, slowing down microbial catabolism and favoring humification over mineralization.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Photosynthesis in Higher Plants - Class 11 |
| Concept | C3 Cycle Stoichiometry |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |