JAMB - Biology (1997 - No. 14)
The part that is similar to the bone is labelled
IV
III
II
I
Explanation
The Dentin and Cementum of a human tooth are similar to bone. Dentin forms the main body of the tooth, extending from the crown to the root, and is a living, calcified tissue like bone. Cementum is a bone-like substance that covers the root of the tooth and anchors it to the jawbone.
The part labelled II is the dentin (See diagram above)