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Question #46470
The Question
The human vermiform appendix is classically cited as a vestigial organ, representing the evolutionary reduction of the caecum found in ancestral herbivores. Based on modern evolutionary biology and human anatomy, which of the following statements is INCORRECT?
Options
- A.
It is a blind-ended tube arising from the caecum and is homologous to the functional caecum of herbivorous mammals.
- B.
Its classification as a vestigial organ signifies the loss of its ancestral cellulolytic function, not necessarily a complete lack of modern utility.
- C.
The evolutionary repurposing of this organ from a digestive fermentation chamber to an immunological reservoir is a classic example of adaptive radiation.
- D.
It contains mucosa-associated lymphoid tissue (MALT) and acts as a 'safe house' to repopulate symbiotic gut microflora following severe gastrointestinal flushing.
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
Vestigial Organs Interpretation|Adaptive Radiation Logic|Vermiform Appendix
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Students often conflate any evolutionary adaptation or functional shift with 'Adaptive Radiation'.
The trap exploits the precise NCERT definition of Adaptive Radiation (which strictly requires speciation and geographical divergence) versus the functional repurposing (exaptation) of a vestigial organ within a single species.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Evolution - Class 12 |
| Concept | Vestigial Organs Interpretation |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |