Bulliform or motor cells take part in

Options

A. providing strenght to leaves
B. curling of leaves
C. drooping of leaves
D. protection of leaves

Answer

**Step-by-Step Solution:**

1. **Understanding Bulliform Cells:**
- Bulliform cells are specialized cells found in the epidermis of monocot leaves. They are large and hygroscopic, meaning they can absorb water.

2. **Location of Bulliform Cells:**
- These cells are primarily located in the upper (adaxial) epidermis of the leaves.

3. **Function of Bulliform Cells:**
- The main function of bulliform cells is to help in the movement of leaves. They play a crucial role in the curling and unrolling of leaves depending on the moisture conditions.

4. **Response to Water Availability:**
- During dry conditions, bulliform cells lose water, causing the leaves to curl up. This reduces the surface area exposed to the sun and minimizes water loss through transpiration.
- Conversely, when water is available (wet conditions), these cells absorb water, leading to the unrolling of the leaves.

5. **Identifying the Correct Option:**
- Given the functions discussed, bulliform or motor cells are primarily involved in the curling of leaves during dry conditions and unrolling during wet conditions. Therefore, the correct answer is **Option B: Curling of leaves.**