Answer to Question 1
The solid portion of the tooth consists of the dentin, which forms the bulk of the tooth; the enamel, which covers the exposed part of the crown and is the hardest and most compact part of a tooth; and a thin layer of bone, the cementum, which is deposited on the surface of the root.
Answer to Question 2
D
Explanation:
A) The coronal plane divides the body into front and back sides.
B) The midsagittal plane divides the body into equal right and left sides.
C) The frontal plane is another name for the coronal plane.
D) Correct.