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 answer the question, "Zone of maximum growth in tap root is," we will analyze the options provided and determine which zone corresponds to the maximum growth of the taproot.

### Step-by-Step Solution:

1. **Understand the Structure of the Root**:
- The root system consists of different zones, each with specific functions. The main zones are the root cap, meristematic zone, zone of elongation, and zone of maturation.

2. **Identify Each Zone**:
- **Root Cap**: This is the protective structure at the tip of the root that helps in penetrating the soil and protects the underlying tissues from damage. It does not contribute to growth.
- **Zone of Cell Elongation**: In this zone, the newly formed cells from the meristematic zone elongate, which contributes to the growth of the root but is not the zone of maximum growth.
- **Zone of Maturation**: This zone is where cells differentiate and mature into various cell types. It is important for the functioning of the root but does not contribute to growth.
- **Meristematic Zone**: This is the region where new cells are actively produced through cell division. It is located just behind the root cap and is crucial for root growth.

3. **Determine the Zone of Maximum Growth**:
- The meristematic zone is where cell division occurs most rapidly, leading to the formation of new cells. This is the zone where the maximum growth of the taproot occurs.

4. **Conclusion**:
- Therefore, the zone of maximum growth in the taproot is the **meristematic zone**.

### Final Answer:
The zone of maximum growth in tap root is the **meristematic zone**.