Zone of maximum growth in tap root is

Options

A. meristematic zone
B. root cap
C. zone of cell elongation
D. zone of cell maturation

Answer

To determine the zone of maximum growth in a tap root, we can analyze the different zones present in the root structure. Here's a step-by-step solution:

### Step 1: Identify the Zones of the Root
The root has several distinct zones:
- **Root Cap**: This is the protective structure at the tip of the root.
- **Meristematic Zone**: Located just above the root cap, this zone contains actively dividing cells.
- **Zone of Elongation**: This zone is where the cells that have just divided begin to elongate.
- **Zone of Maturation**: This area is where cells differentiate and mature, forming structures like root hairs.

### Step 2: Understand the Function of Each Zone
- **Root Cap**: Protects the root tip as it grows through the soil.
- **Meristematic Zone**: Responsible for cell division, but not for growth in length.
- **Zone of Elongation**: Here, the cells elongate significantly, contributing to the increase in the root's length.
- **Zone of Maturation**: Cells mature and develop specialized functions, but this zone does not contribute to root lengthening.

### Step 3: Identify the Zone of Maximum Growth
The zone where the most significant increase in root length occurs is the **Zone of Elongation**. This is where the newly formed cells from the meristematic zone elongate, leading to the overall growth of the root.

### Conclusion
The zone of maximum growth in a tap root is the **Zone of Elongation**.

---