The cells derived from root apical and Shoot apical a meristems and cambium diiferentiate and mature to perform specific funcitons. This act leading to mature is termed as

Options

A. Differentiation
B. De-Differentiation
C. Redifferentiation
D. hetrophily

Explanation

To answer the question regarding the process by which cells derived from root apical and shoot apical meristems and cambium differentiate and mature to perform specific functions, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Meristems**:
- Meristems are regions in plants where cells are actively dividing. The root apical meristem is located at the tip of the root, while the shoot apical meristem is at the tip of the shoot. The cambium is a layer of tissue that contributes to the growth in thickness of stems and roots.

2. **Cell Differentiation**:
- The process by which these actively dividing cells (from meristems) undergo changes in size, structure, and function to become specialized cells is known as differentiation.

3. **Specific Functions**:
- As cells differentiate, they mature into specific types of cells that perform unique functions. For example, some may become xylem cells for water transport, while others may become phloem cells for nutrient transport.

4. **Terminology**:
- The act of cells maturing and taking on specific functions is specifically termed "differentiation." Other terms like de-differentiation and re-differentiation refer to different processes and are not applicable to the initial maturation of cells from meristems.

5. **Conclusion**:
- Therefore, the correct term for the process described in the question is "differentiation."

### Final Answer:
The act leading to the maturation of cells derived from root apical and shoot apical meristems and cambium to perform specific functions is termed **differentiation**.