The guard cells of the stomata present in the epidermis of grasses are

Options

A. Dumb-bell shaped
B. Rounded
C. Elliptical
D. Kidney shaped

Answer

To answer the question regarding the guard cells of the stomata present in the epidermis of grasses, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Stomata**: Stomata are small openings on the surface of leaves that allow for gas exchange. Each stoma is surrounded by a pair of guard cells that regulate its opening and closing.

2. **Identify the Type of Plant**: The question specifies that we are discussing grasses. Grasses are classified as monocots, which have specific characteristics in their anatomy.

3. **Examine the Guard Cells in Grasses**: In the epidermis of grasses, the guard cells have a unique shape. Unlike many other plants where guard cells may be kidney-shaped or oval, in grasses, they are typically described as having a dumbbell shape.

4. **Consider the Role of Subsidiary Cells**: The guard cells in grasses are flanked by two lateral subsidiary cells. This arrangement is important for the function of the stomata and helps in the regulation of gas exchange.

5. **Evaluate the Options**: The question provides multiple choice options. Based on our understanding:
- Option 1: Dumbbell shape (correct)
- Option 2: Round (incorrect)
- Option 3: Elliptical (incorrect)
- Option 4: Other shape (incorrect)

6. **Select the Correct Answer**: Based on the analysis, the correct answer is that the guard cells of the stomata present in the epidermis of grasses are of dumbbell shape.

### Final Answer:
The guard cells of the stomata present in the epidermis of grasses are **dumbbell-shaped**.

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