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Question #46001
The Question
In a terrestrial ecosystem, a massive accumulation of senesced leaves rich in lignin and chitin occurs on the forest floor. This specific biochemical composition alters the decomposition dynamics, triggering a cascade of ecological consequences. Which of the following statements is INCORRECT regarding this scenario?
Options
- A.
The rate of decomposition will be significantly retarded, as lignin and chitin resist rapid catabolism by bacterial and fungal extracellular enzymes.
- B.
The delayed mineralization will lead to nutrient immobilization, temporarily locking up essential inorganic nutrients within the microbial biomass and recalcitrant detritus.
- C.
The resulting nutrient-poor edaphic conditions will intensify interspecific competition, favoring a community shift where surviving plant species rely on resource partitioning and specialized symbiotic associations.
- D.
The abundant detritus will immediately accelerate the detritus food chain (DFC), leading to a rapid influx of inorganic nutrients that boosts the ecosystem's gross primary productivity (GPP).
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
Decomposition Rate Modifiers|Thermal Tolerance Ranges|Ecosystem Productivity
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse the 'quantity' of detritus with the 'rate' of decomposition.
While a large biomass of detritus provides potential energy for the Detritus Food Chain (DFC), its biochemical composition (lignin/chitin) acts as a strict rate-limiting bottleneck.
Failing to recognize that recalcitrant detritus causes 'nutrient immobilization' (locking up nutrients) rather than rapid mineralization is the primary trap.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Plant Growth and Development - Class 11 |
| Concept | Senescence vs Abscission |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |