Biology Reproduction MDCAT 2011
PMDC Verified Question 80 of 81
Which one of the following differentiates directly into mature sperm?
A
Primary spermatocyte
B
Spermatid
C
Spermatogonia
D
Secondary spermatocyte
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Spermatid
Concept:

Spermiogenesis is the final stage of spermatogenesis, where major structural changes occur without cell division.

Solution:

  • After meiosis II, the resulting haploid cells are called spermatids.


  • A spermatid is initially a spherical, non-motile cell.


  • Through a morphological differentiation process called spermiogenesis, it develops an acrosome, condenses its nucleus, and forms a flagellum (tail) to become a highly motile, mature spermatozoon (sperm).


Why other options are incorrect:

Spermatogonia and primary/secondary spermatocytes must first complete meiosis before they can reach the spermatid stage to begin physical differentiation.

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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