WAEC Biology 2017 Objective — Question 28

Question 28 of 50 from the West African Examinations Council (WAEC) Biology 2017 Objective paper, with the correct answer and a full explanation.

The teeth which are absent in the young of the organism are labelled

A. A. W
B. B. X
C. C. Y
D. D. ZCorrect

Explanation

W=Incisors, X=Canine, Y=Premolar, Z=Molar. The first type of teeth possessed by young humans is known as milk teeth, which may number up to twenty; milk teeth comprise incisors, canines and premolars. Molars (Z) are absent — the permanent teeth, which comprise incisors, canines, premolar and molar, only grow after the milk teeth have fallen off.

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