Which of the following forms the major part of the tooth and is covered by enamel ?

Options

A. Enamel
B. Dentine
C. Cement
D. Odontoblast

Answer

To solve the question "Which of the following forms the major part of the tooth and is covered by enamel?" we will analyze the options provided: enamel, dentine, cement, and odontoblast.

### Step-by-Step Solution:

1. **Understanding Tooth Structure**:
- The tooth is composed of several parts: enamel, dentine, cementum, and pulp. Each part has a specific function and location.

2. **Identifying Enamel**:
- Enamel is the hard outer layer of the tooth. It is the hardest substance in the human body and serves as a protective covering for the underlying structures.

3. **Identifying Dentine**:
- Dentine is the layer beneath the enamel. It is less hard than enamel but makes up the bulk of the tooth structure. Dentine contains microscopic tubules and is produced by cells called odontoblasts.

4. **Identifying Cementum**:
- Cementum covers the roots of the teeth and helps anchor them to the jawbone. It is not the major part of the tooth structure.

5. **Identifying Odontoblasts**:
- Odontoblasts are the cells responsible for forming dentine. They are not a structural part of the tooth but rather contribute to the formation of dentine.

6. **Conclusion**:
- Since dentine lies beneath the enamel and constitutes the major part of the tooth, the correct answer to the question is **dentine**.

### Final Answer:
The major part of the tooth that is covered by enamel is **dentine**.

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