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Question #46479
The Question
In the context of the evolutionary ecology of parasitism and the host-parasite 'arms race', which of the following statements is INCORRECT regarding their co-evolutionary dynamics?
Options
- A.
A. The evolution of novel secondary metabolites by a host plant exerts directional selection on the parasite to evolve specific detoxifying mechanisms.
- B.
B. Intense co-evolutionary pressure typically broadens the parasite's fundamental niche, enabling it to exploit multiple host species to ensure survival.
- C.
C. Extreme host-specificity is a common outcome of co-evolution, meaning both host and parasite lineages often speciate simultaneously.
- D.
D. A highly successful, long-term parasite generally evolves to moderate its virulence, as rapid host lethality would compromise its own reproductive fitness.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Co-evolutionary Resistance|Evolutionary Ecology of Parasitism|Niche Overlap vs. Resource Partitioning
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often confuse 'evolutionary success' with 'broad adaptability'.
In parasitism, evolutionary success via co-evolution usually leads to extreme specialization (narrowing of the niche) rather than generalization.
The trap relies on the misconception that parasites evolve to infect more hosts to avoid extinction, whereas co-evolution actually locks them into a highly specific, mutually dependent trajectory.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Evolution - Class 12 |
| Concept | Co-evolutionary Resistance |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |