Bulliform cells are found in

Options

A. The epidermis of monocot stem
B. The adaxial epidermis of grass leaf
C. Abaxial epidermis of dicot leaf
D. The adaxial epidermis of dorsiventral leaf

Answer

**Step-by-Step Solution:**

1. **Understanding Bulliform Cells:**
- Bulliform cells, also known as motor cells, are large, bubble-shaped epidermal cells found in certain plants. They play a crucial role in the regulation of leaf folding and unfolding, particularly in response to water availability.

2. **Identifying the Location of Bulliform Cells:**
- These cells are primarily located on the upper surface of many monocot leaves. The upper surface of a leaf is referred to as the adaxial surface, while the lower surface is called the abaxial surface.

3. **Analyzing the Options:**
- **Option 1:** Epidermis of monocot stem - This is incorrect as bulliform cells are not found in stems.
- **Option 2:** Adaxial epidermis of grass leaf - This is correct as bulliform cells are present in the upper surface of grass leaves, which are monocots.
- **Option 3:** Abaxial epidermis of dicot leaves - This is incorrect as bulliform cells are not found in dicots.
- **Option 4:** Adaxial epidermis of dorsi-ventral leaf - This is also incorrect as bulliform cells are specifically associated with monocots, not dorsi-ventral leaves.

4. **Conclusion:**
- Based on the analysis, the correct answer is **Option 2: Adaxial epidermis of grass leaf**.