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Question #47569
The Question
Sphagnum is economically significant for providing peat, which is used as fuel and as a packing material. The massive accumulation of peat in bog ecosystems reflects a unique stratification efficiency where dead organic matter builds up rather than decaying. Which of the following statements INCORRECTLY describes the ecosystem dynamics and biological mechanisms of Sphagnum bogs?
Options
- A.
Sphagnum possesses a high water-holding capacity, which creates waterlogged, anaerobic conditions in the deeper strata that retard microbial decomposition.
- B.
The continuous accumulation of Sphagnum biomass drives the bog ecosystem towards a highly alkaline state, denaturing decomposer enzymes and forming peat.
- C.
Mosses play a critical role in ecological succession by altering the physicochemical properties of their habitat, often delaying the progression toward a mesic climax community.
- D.
The economic utility of Sphagnum for the trans-shipment of living materials is directly attributed to its remarkable ability to retain moisture.
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
Chlorophyceae|Flagellar_Insertion|Heat_Shock_Proteins|Zoospores
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: The trap relies on 'Word-Play' and 'Functional Confusion'.
Students know that extreme pH denatures enzymes and halts decomposition, making the second half of Option B sound highly plausible.
However, they must precisely recall that Sphagnum bogs are famously acidic (low pH), not alkaline.
This tests the student's ability to link a macroscopic economic product (peat) to its microscopic biochemical prerequisite (acidification).
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Plant Kingdom - Class 11 |
| Concept | Chlorophyceae Flagellar Insertion |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |