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Question #46644
The Question
In a mature terrestrial forest ecosystem where the Detritus Food Chain (DFC) dominates, optimal foraging by detritivores shifts from minimizing search time to assessing nutrient quality. Under climatic conditions of low temperature and high soil acidity, which of the following statements regarding the ecosystem's decomposition dynamics is INCORRECT?
Options
- A.
A. The low temperature and acidic conditions will inhibit microbial catabolism, leading to a build-up of recalcitrant organic matter.
- B.
B. The rate of decomposition will be significantly enhanced if the accumulated detritus is predominantly composed of lignin and chitin.
- C.
C. Detritivores must expend higher metabolic energy to extract nutrients, as the available detritus retains complex secondary chemical defenses.
- D.
D. The overall decomposition process will remain an oxygen-requiring phenomenon, despite the environmental shift towards lower temperatures.
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
Hibernating Mammals|Phytoplankton|Energy Flow
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse the high carbon/energy content of complex structural biopolymers (lignin and chitin) with their biodegradability.
While they are abundant in forest detritus, their complex, cross-linked structures make them highly resistant to microbial enzymatic breakdown (catabolism).
Thus, they act as a rate-limiting factor that slows down decomposition, rather than enhancing it.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Organisms and Populations - Class 12 |
| Concept | Diapause vs Hibernation vs Aestivation |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |