The plane of division in tunica is

Options

A. Anticlinal
B. Perclinal
C. Both anticlinal and periclinal
D. Peripheral division

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the plane of division in the tunica layer of the plant.

2. **Defining Tunica**: Tunica is a single layer of cells that forms the outermost layer of the shoot apex in plants. It is responsible for the formation of the epidermis.

3. **Understanding Cell Division**: There are two types of cell division relevant to this question:
- **Anticlinal Division**: This type of division occurs perpendicular to the surface of the plant, leading to an increase in the number of cells in the same layer. It helps in surface growth.
- **Periclinal Division**: This division occurs parallel to the surface, which increases the thickness of the tissue.

4. **Identifying the Division in Tunica**: In the tunica layer, the cells primarily divide by anticlinal division. This is because the tunica is responsible for surface growth and maintaining the outer layer of the plant.

5. **Eliminating Incorrect Options**:
- The question states that there is no division called "periclinal division" in the context of tunica, which allows us to eliminate that option.
- Since tunica only undergoes anticlinal division, we can also eliminate the option that states both anticlinal and periclinal.

6. **Conclusion**: The correct answer to the question "The plane of division in tunica is" is **Anticlinal**.

**Final Answer**: The plane of division in tunica is **Anticlinal**.

---