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Question #46082
The Question
A pristine sacred grove, characterized by a dense canopy and a thick layer of slow-decomposing litter, is abruptly cleared for agricultural expansion. This exposes the forest floor to direct sunlight and increased aeration. Based on the principles of nutrient cycling and decomposition, which of the following statements regarding the subsequent ecological impact is INCORRECT?
Options
- A.
The sudden exposure to high temperature and aerobic conditions will initially accelerate the mineralization of existing humus, releasing inorganic nutrients.
- B.
The altered microclimate will cause the rate of humification to surpass mineralization, leading to a massive build-up of a dark, amorphous nutrient reservoir.
- C.
The ecosystem will shift from a state of nutrient conservation within organic matter to rapid nutrient leaching due to the lack of immediate plant uptake.
- D.
The detritus food chain (DFC) will experience a cascade failure due to the abrupt cessation of continuous litterfall and rapid depletion of the organic pool.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Evolutionary_Exception
Tackle problems where standard rules evolve or change based on specific environmental constraints.
Concepts Behind This Question
Ecotone_and_Edge_Effect|Biosphere_Reserves_Architecture|Co-extinction_Logic
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often misunderstand the delicate balance between humification (nutrient storage) and mineralization (nutrient release).
The trap relies on the misconception that clearing a forest might increase organic matter build-up due to dead roots/stumps, failing to recognize that the shift to a high-temperature, highly aerobic microclimate drastically accelerates mineralization, rapidly depleting the humus reservoir and collapsing the detritus food chain.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biodiversity and Conservation - Class 12 |
| Concept | Biosphere Reserves Architecture |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |