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Question #45166
The Question
The patenting and widespread commercialization of a genetically identical, high-yield transgenic seed often results in extensive monoculture, replacing indigenous landraces. Based on the principles of biodiversity conservation and population ecology, which of the following statements is INCORRECT regarding the ecological impact of this practice?
Options
- A.
The population lacks the genetic plasticity required for natural selection, making it highly susceptible to localized environmental changes and novel pathogens.
- B.
The sudden collapse of this homogeneous population can precipitate the 'co-extinction' of obligate mutualists, exacerbating the 'Evil Quartet'.
- C.
Due to its artificially enhanced intrinsic rate of increase (r), the monoculture will exhibit increased resistance to alien species invasions and maintain ecosystem stability.
- D.
According to David Tilman's ecosystem experiments, this severe reduction in biodiversity will lead to higher year-to-year variation in total community biomass.
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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
Transgenic Biofortification|Consumer Sovereignty|Ecosystem Energy Flow
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse a population's growth potential (high 'r' or carrying capacity) with ecological resilience.
While a patented transgenic crop may have a high yield or growth rate, NCERT strictly links ecosystem stability and resistance to alien species invasions to biodiversity (Tilman's experiments), not population growth parameters.
The question also tests the application of the 'Evil Quartet' (co-extinction) and genetic plasticity in the context of biopiracy and patented monocultures.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biotechnology and Its Applications - Class 12 |
| Concept | Biopiracy and Patents |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |