Leptocentric vascular bundle found in

Options

A. Where xylem is completely surrounded by phloem
B. Where phloem is completely surrounded by xylem
C. Where xylem and phloem lies on different periphery
D. Where phloem is present only on the outer side of cambium

Answer

To answer the question "Leptocentric vascular bundle found in," we need to analyze the options provided and understand the characteristics of leptocentric vascular bundles.

### Step-by-Step Solution:

1. **Understanding Vascular Bundles**:
- Vascular bundles are structures that contain xylem and phloem, which are essential for the transport of water, nutrients, and food in plants.

2. **Identifying Leptocentric Vascular Bundles**:
- A leptocentric vascular bundle is characterized by having phloem completely surrounded by xylem. This arrangement is a type of concentric vascular bundle.

3. **Evaluating the Options**:
- **Option 1**: "Where xylem is completely surrounded by phloem" - This describes a different type of concentric vascular bundle, which is incorrect for leptocentric bundles.
- **Option 2**: "Where phloem is completely surrounded by xylem" - This is the correct description of a leptocentric vascular bundle.
- **Option 3**: "Where xylem and phloem lie on different peripheries" - This describes a radial arrangement, which is also incorrect.
- **Option 4**: "Where phloem is present only on the outer side of cambium" - This describes a collateral or conjoined vascular bundle, which is incorrect as well.

4. **Conclusion**:
- Based on the analysis, the correct answer is that leptocentric vascular bundles are found in the arrangement where phloem is completely surrounded by xylem.

### Final Answer:
Leptocentric vascular bundles are found where phloem is completely surrounded by xylem.

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