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Question #46439
The Question
The flippers of penguins and dolphins, as well as the eyes of octopuses and mammals, are classic examples of convergent evolution. Which of the following statements regarding the evolutionary dynamics of these structures is INCORRECT?
Options
- A.
They are analogous structures that evolved independently in distinct lineages to optimize ecological fitness for similar functions.
- B.
Their high degree of phenotypic similarity is a direct indicator of their close phylogenetic proximity and shared recent ancestry.
- C.
They demonstrate how similar environmental selective pressures can maximize Darwinian fitness using entirely different anatomical blueprints.
- D.
They represent a scenario where the functional requirement of a specific ecological niche dictates the morphological outcome, irrespective of the organisms' distinct evolutionary origins.
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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
Flipper of Penguin|Flipper of Dolphin|Ecological Fitness
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: The core misconception tested here is the conflation of phenotypic similarity with phylogenetic relatedness.
Students often assume that highly complex, similar structures (like the camera-type eye) must stem from a recent common ancestor.
The trap relies on failing to distinguish between 'Homology' (divergent evolution based on lineage) and 'Analogy' (convergent evolution driven purely by ecological fitness and selective pressures).
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Evolution - Class 12 |
| Concept | Analogous Organ Structure |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |