|
Which is the hardest material of the human body? |
|||||||
|
a) |
Dentine |
b) |
Enamel |
c) |
Teeth |
d) |
Bone |
|
Which is the hardest material of the human body? |
|||||||
|
a) |
Dentine |
b) |
Enamel |
c) |
Teeth |
d) |
Bone |
(b)
A tooth consists of three region, i.e., crown, neck and root. The exposed part, crown is surrounded by the hardest material of the body. This hardest material is enamel which is the secretion of cells of ameloblast