Sometimes a few epidermal cells in the vicinity of guard cells become specialized in their shape and size and are known as -

Options

A. Stomatal aperture
B. Trichomal cell
C. Subsidiary cells
D. Stomata

Answer

**Step-by-Step Solution:**

1. **Understanding the Context**: The question refers to specialized epidermal cells that are located near guard cells. It is essential to know the role and structure of guard cells in plants.

2. **Identifying Guard Cells**: Guard cells are specialized cells that surround the stomatal pore and regulate its opening and closing. They play a crucial role in gas exchange and transpiration in plants.

3. **Recognizing Adjacent Cells**: The question specifically asks about the cells that are in the vicinity of guard cells. These cells can have specialized functions related to the stomata.

4. **Options Analysis**:
- **Option A: Stomatal Aperture** - This refers to the opening created by guard cells and is not a type of cell.
- **Option B: Trichomal Cell** - These are hair-like structures that arise from epidermal cells but are not specifically associated with guard cells.
- **Option C: Subsidiary Cells** - These are specialized epidermal cells that are found adjacent to guard cells and assist in their function.
- **Option D: Stomata** - This term refers to the entire structure, including guard cells and the pore, not a specific type of cell.

5. **Conclusion**: The specialized epidermal cells in the vicinity of guard cells are known as **Subsidiary Cells**. Therefore, the correct answer is **Option C: Subsidiary Cells**.

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