Biology Evolution KMDC 2014
PMDC Verified Question 47 of 47
Vestiges of vestigial organs are those organs which have ceased to be of any use in their possessor but they persist to reduce from generation after generation. In man, they are:
A
Vermiform appendix
B
Coccyx
C
Nictitating
D
All A, B, C
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: All A, B, C
Concept:

Vestigial organs are historical remnants of anatomical structures that served a functional purpose in an organism's evolutionary ancestors but have lost most or all of their original function.

Solution:

  • Vermiform appendix: A remnant of a larger cecum used by herbivorous ancestors to digest cellulose.
  • Coccyx (tailbone): The remnant of a lost tail from primate ancestors.
  • Nictitating membrane (plica semilunaris): A remnant of a functional third eyelid found in other vertebrates like reptiles and birds.
  • Therefore, All A, B, C are vestigial structures in humans.


Why other options are incorrect:

  • Choosing only A, B, or C is incorrect because all three are classic textbook examples of human vestigial organs.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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