Biology Evolution UHS 2023
PMDC Verified Question 23 of 47
Which of the following type of organs are supposed to be functional in ancestral species rather than in present day species:
A
Vestigial organs
B
Homologous organs
C
Analogous organs
D
Embryonic organs
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Vestigial organs
Concept:

Evolutionary baggage is often carried forward in a species' anatomy long after it ceases to be useful.

Solution:

  • Vestigial organs are anatomical features that were fully developed and highly functional in a species' evolutionary ancestors.
  • As the organism evolved and adapted to new environmental niches, these organs lost their original purpose.
  • Consequently, they became reduced in size and function in present-day descendants (e.g., the human appendix, whale pelvis).


Why other options are incorrect:

  • Homologous / Analogous organs: These describe highly functional organs in present-day organisms compared across different species.

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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