Centrifugal development of xylem occurs in :

Options

A. Stem
B. Root
C. Leaf
D. Flower

Answer

To determine where centrifugal development of xylem occurs, we need to understand the concepts of xylem arrangement in plants.

### Step-by-Step Solution:

1. **Understanding Xylem Development**: Xylem can develop in two ways: centrifugal and centripetal. In centrifugal development, the xylem develops outward from the center, while in centripetal development, it develops inward towards the center.

2. **Identifying the Types of Xylem Arrangement**:
- **Endarch Condition**: In this condition, the protoxylem (the first xylem to develop) is located towards the center, and the metaxylem (the later-developed xylem) is located towards the periphery. This arrangement is typical of stems.
- **Exarch Condition**: In this condition, the protoxylem is located towards the outside, and the metaxylem is towards the center. This arrangement is typical of roots.

3. **Analyzing the Options**: The question asks about centrifugal development of xylem. Based on the definitions:
- In stems, xylem develops in an endarch manner (centrifugal).
- In roots, xylem develops in an exarch manner (centripetal).
- Leaves and flowers do not primarily exhibit centrifugal development of xylem.

4. **Conclusion**: Based on the above analysis, the centrifugal development of xylem occurs in the stem.

### Final Answer:
Centrifugal development of xylem occurs in the stem.