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Question #45194
The Question
In a pelagic marine ecosystem, the pyramid of biomass is typically inverted, with the standing crop of zooplankton and fishes far exceeding that of phytoplankton. Which of the following statements regarding the ecological and thermodynamic dynamics of this system is INCORRECT?
Options
- A.
The energy pyramid for this ecosystem remains strictly upright, as energy flow must adhere to the laws of thermodynamics.
- B.
The primary productivity of phytoplankton is lower than the secondary productivity of zooplankton, which directly results in the inverted biomass.
- C.
The system's stability relies on a high turnover rate (P/B ratio) and rapid reproductive flux of the primary producers.
- D.
The standing crop of phytoplankton is kept low due to intense and continuous grazing by the zooplankton.
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
Niche Overlap|Optimal Foraging Theory|Warblers
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students frequently confuse 'Standing Crop' (a static measurement of mass) with 'Productivity' (a dynamic rate of energy/mass accumulation).
The trap exploits the misconception that an inverted biomass pyramid implies inverted productivity or energy flow.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Organisms and Populations - Class 12 |
| Concept | Niche Overlap vs. Resource Partitioning |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |