Small thin walled cells with dense protoplasm are found in a region ofroot namely

Options

A. Elongation region
B. Maturation region
C. Root hair region
D. Meristematic region

Answer

To answer the question "Small thin walled cells with dense protoplasm are found in a region of root namely," we need to analyze the different regions of the root and identify where these specific characteristics are present.

### Step-by-Step Solution:

1. **Understanding Root Structure**:
- The root has several distinct regions: the root cap, meristematic region, elongation region, and maturation region.

2. **Identifying the Meristematic Region**:
- The meristematic region is located just above the root cap. This area is responsible for the growth of the root as it contains actively dividing cells.

3. **Characteristics of Cells in the Meristematic Region**:
- The cells in the meristematic region are small, thin-walled, and have dense protoplasm. These characteristics are crucial for their function, which is to divide rapidly.

4. **Elongation and Maturation Regions**:
- The region of elongation is where the cells that have divided in the meristematic region begin to elongate. These cells are larger and not as dense in protoplasm as those in the meristematic region.
- The maturation region is where cells further differentiate and mature, and root hairs begin to form, which are not characterized by being small and thin-walled.

5. **Conclusion**:
- Based on the characteristics described in the question, the small thin-walled cells with dense protoplasm are found in the **meristematic region** of the root.

### Final Answer:
The answer is **D. Meristematic region**.