Question
Biology Question on Parts of the digestive system
How many teeth grow only once in the life of a man?
A
20
B
8
C
32
D
12
Answer
12
Explanation
Solution
The number of milk teeth which are replacable for the 2nd time is 20. In adult human, total number of teeth is 32. Therefore, the teeth that grow only once in the life of a man is 32 - 20 or 12.