WAEC Biology 2025 Objective — Question 42

Question 42 of 50 from the West African Examinations Council (WAEC) Biology 2025 Objective paper, with the correct answer and a full explanation.

The ability of some individuals to taste phenylthiocarbamide is

A. Morphological variation
B. Physiological variationCorrect
C. Morphological adaptation
D. Physiological adaptation

Explanation

Phenylthiocarbamide (PTC) tasting ability is a physiological variation, not a morphological one, since it relates to how the body functions rather than form/structure.

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