Biology Homeostasis PMDC Conceptual Practice
PMDC Verified Question 16 of 99
When an amphibian such as a frog is submerged in water, it periodically sheds an outer epidermal layer composed of:
A
Cuboidal epithelium
B
Squamous epithelium
C
Columnar epithelium
D
Ciliated epithelium
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Squamous epithelium
Concept: Epithelial tissue structure in skin.

Solution: The outermost stratum corneum of amphibian skin consists of flattened, scale-like cells forming a squamous epithelium, which is periodically sloughed off in water.

Why other options are incorrect:
  • Option A: Cuboidal epithelium lines secretory glands and renal tubules.

  • Option C: Columnar epithelium lines the gastrointestinal tract.

  • Option D: Ciliated epithelium lines the respiratory tract and oviducts.

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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