Stomatal apparatus consists of

Options

A. one guard cell in monocots
B. two guard cells in dicots
C. bone shaped guard cells in monocots
D. two guard cells and few subsidiary cells

Answer

**Step-by-Step Solution:**

1. **Understanding Stomatal Apparatus**: The stomatal apparatus is a specialized structure in plants that facilitates gas exchange. It consists of various components that work together to control the opening and closing of stomata.

2. **Identifying the Components**: The main components of the stomatal apparatus include:
- **Guard Cells**: These are specialized epidermal cells that surround the stomatal pore. Their primary function is to regulate the size of the stomatal opening.
- **Subsidiary Cells**: Also known as accessory cells, these cells surround the guard cells and provide support and additional functions.

3. **Counting the Guard Cells**: In the stomatal apparatus, there are typically **two guard cells** that form the boundary of the stomatal pore. This is a characteristic feature in most plants.

4. **Considering the Options**: The options provided in the question include:
- One guard cell and monocots
- Two guard cells and dicots
- Bone-shaped guard cells and monocots
- Two guard cells and few subsidiary cells

5. **Evaluating the Options**:
- The first option is incorrect because there is typically more than one guard cell.
- The second option is misleading as it mentions dicots but does not specify the presence of subsidiary cells.
- The third option is incorrect because guard cells are not bone-shaped; they are generally kidney-shaped.
- The fourth option correctly states that the stomatal apparatus consists of **two guard cells and few subsidiary cells**.

6. **Conclusion**: Therefore, the correct answer to the question is that the stomatal apparatus consists of **two guard cells and few subsidiary cells**.

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