The diagram shows a human jaw. Which labelled tooth is an incisor?
▶️ Answer/Explanation
Ans: B
Incisors are the sharp, chisel-shaped front teeth (typically four in each jaw) used for cutting food. In the diagram, B is the central tooth at the front of the jaw, matching the structure and position of an incisor.
Other teeth (e.g., canines, premolars, molars) have different shapes and functions (tearing or grinding). Since the question asks specifically for the incisor, the correct label is B.
The diagram shows the different types of teeth found in the upper jaw of a human. They are in the same order as they are found in the jaw.
Which type of tooth is circled?
A) canine
B) incisor
C) molar
D) premolar
▶️ Answer/Explanation
Ans: A
The circled tooth is the canine (A), which is pointed and located between the incisors and premolars. Canines are specialized for tearing food.
Incisors (B) are flat and used for cutting, molars (C) are broad for grinding, and premolars (D) are transitional between canines and molars. The diagram clearly shows the pointed shape of the canine, confirming the answer as A (Canine).