Biology Evolution DUHS 2022
PMDC Verified Question 40 of 47
Presence of remnant of pelvic girdle in whale and snake although they never have legs show evidence from:
A
Vestigial organs
B
Biochemical evidence
C
Paleontology
D
Embryology
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:

Evolution leaves anatomical "clues" in modern organisms that point to the physical structures of their ancestors.

Solution:

  • Whales and snakes evolved from four-legged (tetrapod) ancestors.
  • Over time, as their mode of locomotion changed, the functional need for hind legs was lost.
  • The remnants of the pelvic girdle and hind limb bones found inside their bodies are vestigial organs—structures reduced in size and lacking their original function, providing powerful evidence of descent with modification.


Why other options are incorrect:

  • Paleontology: Involves the study of fossils, not structures in living organisms.
  • Biochemical / Embryology: Refers to DNA/proteins and developmental stages, respectively, rather than adult anatomical remnants.

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.

Previous Question All Evolution MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App