Which of the following is not included in stomatal apparatus

Options

A. Stomatal aperture
B. Guard cells
C. Subsidary cells
D. Sclerenchymatous cells

Answer

**Step-by-Step Solution:**

1. **Understanding the Stomatal Apparatus**: The stomatal apparatus is primarily involved in the process of transpiration and gas exchange in plants. It consists of several components that work together to regulate these processes.

2. **Identifying the Components**: The main components of the stomatal apparatus include:
- **Stomatal Aperture**: This is the opening of the stomata through which gas exchange occurs.
- **Guard Cells**: These are specialized cells that surround the stomatal aperture and control its opening and closing.
- **Subsidiary Cells**: These are additional cells that support the guard cells and help in the functioning of the stomata.

3. **Analyzing the Options**: The question provides four options:
- Stomatal Aperture
- Guard Cells
- Subsidiary Cells
- Sclerenchyma Cells

4. **Determining the Incorrect Option**:
- The first three options (Stomatal Aperture, Guard Cells, and Subsidiary Cells) are all integral parts of the stomatal apparatus.
- **Sclerenchyma Cells**, on the other hand, are a type of supportive tissue in plants but are not involved in the stomatal apparatus. They are typically hard and dead cells that provide structural support.

5. **Conclusion**: Therefore, the component that is **not included** in the stomatal apparatus is **Sclerenchyma Cells**.

**Final Answer**: Sclerenchyma Cells

---