Radial vascular bundles characteristically occurs in

Options

A. monocot and dicot stems
B. monocot and dicot leaves
C. monocot and dicot roots
D. all of these

Explanation

**Step-by-Step Solution:**

1. **Understanding Radial Vascular Bundles**:
- Radial vascular bundles are defined as vascular bundles where xylem and phloem are arranged at different radii. This means that in a cross-section, the xylem and phloem do not lie adjacent to each other but are separated by a certain distance.

2. **Visual Representation**:
- To better understand this arrangement, visualize a diagram where the xylem is located at the center and the phloem is positioned at a different radius around it. This distinct separation is a key characteristic of radial vascular bundles.

3. **Identifying Locations**:
- Radial vascular bundles are typically found in the roots of plants. Specifically, they are common in both monocotyledons (monocots) and dicotyledons (dicots).

4. **Conclusion**:
- Based on the characteristics and locations discussed, the answer to the question "Radial vascular bundles characteristically occurs in" is that they occur in the roots of monocots and dicots.

**Final Answer**: Radial vascular bundles characteristically occur in the roots of monocots and dicots.

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