Vascular bundle having cambium between the xylem and phloem is called -

Options

A. Close vascular bundle
B. Open vascular bundle
C. Conjoint vascular bundle
D. Radial vascular bundle

Answer

To answer the question "Vascular bundle having cambium between the xylem and phloem is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Vascular Bundles**: Vascular bundles are the arrangements of xylem and phloem tissues in plants. They are crucial for the transport of water, nutrients, and food.

2. **Identifying Cambium**: Cambium is a layer of tissue that can divide to form new cells. It is located between the xylem and phloem in some vascular bundles.

3. **Types of Vascular Bundles**:
- **Open Vascular Bundles**: These bundles have cambium present between the xylem and phloem. This allows for secondary growth, which is typical in dicotyledons (dicots).
- **Closed Vascular Bundles**: These bundles do not have cambium between xylem and phloem, which means they do not allow for secondary growth. This condition is usually found in monocotyledons (monocots).

4. **Conjoined and Radial Vascular Bundles**:
- **Conjoined Vascular Bundles**: In these bundles, xylem and phloem are located on the same radius. If cambium is present, they are classified as open vascular bundles.
- **Radial Vascular Bundles**: Here, xylem and phloem are found on different radii, alternating in arrangement.

5. **Conclusion**: Since the question specifically asks for a vascular bundle that has cambium between xylem and phloem, the answer is "open vascular bundle."

### Final Answer:
The vascular bundle having cambium between the xylem and phloem is called an **open vascular bundle**.

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