Question

The number of molars present in the upper jaw of human beings is

• A. four
• B. six
• C. two
• D. one

Answer 1

The correct option is B

six

The correct option is B

Explanation of the correct option:

1. In mammals, the number of teeth is represented by a dental formula on the basis of their place and function. The dental formula is represented in the following way: $\frac{\mathrm{Number}\mathrm{of}\mathrm{teeth}\mathrm{in}\mathrm{each}\mathrm{half}\mathrm{of}\mathrm{upper}\mathrm{jaw}}{\mathrm{Number}\mathrm{of}\mathrm{teeth}\mathrm{in}\mathrm{each}\mathrm{half}\mathrm{of}\mathrm{lower}\mathrm{jaw}}$
2. For example,
   The dental formula of a human being is : $\frac{2,1,2,3}{2,1,2,3}$, $\frac{\mathrm{Incisors},\mathrm{Canines},\mathrm{Premolars},\mathrm{Molars}}{\mathrm{Incisors},\mathrm{Canines},\mathrm{Premolars},\mathrm{Molars}}$
3. Formula for total teeth in both the jaws: $\frac{\mathrm{Number}\mathrm{of}\mathrm{teeth}\mathrm{in}\mathrm{upper}\mathrm{jaw}}{\mathrm{Number}\mathrm{of}\mathrm{teeth}\mathrm{in}\mathrm{lower}\mathrm{jaw}}$
4. Total Incisors 8, Total Canines 4, Total Premolars 8 and Total Molars 12.

Final answer: The number of molars present in the upper jaw of human beings is 12.