Arrange the different parts of the root vertically, from the top to the bottom.

Options

A. Region of elongation `to` Root hair `to` Region of maturation `to` Region of meristematic activity `to` Root cap
B. Region of maturation `to` Root hair `to` Region of elongation `to` Region of meristematic activity `to` Root cap
C. Region of maturation `to` Region of elongation `to` Region of meristematic activity `to` Root cap `to` Root hair
D. Root cap `to` Region of meristematic activity `to` Region of elongation `to` Root hair `to` Region of maturation

Answer

To arrange the different parts of the root vertically from top to bottom, we will follow these steps:

### Step-by-Step Solution:

1. **Root Cap**: The very tip of the root is covered by the root cap. This structure protects the delicate meristematic cells underneath as the root pushes through the soil.

2. **Meristematic Region**: Just above the root cap is the meristematic region. This area contains actively dividing cells that contribute to the growth of the root. These cells are small, thin-walled, and have dense cytoplasm.

3. **Region of Elongation**: Following the meristematic region is the region of elongation. In this zone, the newly formed cells from the meristematic region begin to elongate, increasing the length of the root.

4. **Region of Maturation**: Finally, the uppermost part of the root is the region of maturation. In this area, the elongated cells differentiate into various types of cells. It is also where root hairs develop, which are essential for water and nutrient absorption.

### Final Arrangement:
- **Top**: Root Cap
- **Next**: Meristematic Region
- **Then**: Region of Elongation
- **Bottom**: Region of Maturation