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Question #46033
The Question
Which of the following statements regarding standing crop and ecosystem energetics is NOT correct?
Options
- A.
Standing crop is a static measurement expressed as the biomass or number of living organisms in a unit area at a specific time.
- B.
According to Lindeman's 10% law, the standing crop biomass of a given trophic level will always be approximately 10% of the standing crop biomass of the preceding trophic level.
- C.
A relatively small standing crop of phytoplankton can support a larger standing crop of zooplankton provided the phytoplankton have a significantly higher rate of productivity.
- D.
The progressive decrease in available energy at successive higher trophic levels is primarily due to cumulative respiratory losses and metabolic heat production.
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
Diversity-Stability Relationship|Alien Species Invasion Impacts
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students frequently conflate 'Energy Transfer' with 'Biomass Transfer'.
While energy strictly follows the 10% law and always forms an upright pyramid, standing crop (biomass) is a static snapshot that depends on the turnover rate (productivity) of the organisms, allowing for inverted biomass pyramids in aquatic ecosystems.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Ecosystem - Class 12 |
| Concept | Standing Crop quantification |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |