When a meristematic tissue "Cambium" is present inside a vascular bundle, the bundle is said to be

Options

A. Conjoint
B. Open
C. Closed
D. Collateral

Answer

To solve the question regarding the classification of a vascular bundle when a meristematic tissue called cambium is present, we can follow these steps:

### Step-by-Step Solution:

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

2. **Identifying Cambium**:
- Cambium is a type of meristematic tissue that is responsible for secondary growth in plants. It is a layer of cells that can divide and differentiate into xylem and phloem.

3. **Position of Cambium**:
- When cambium is located between the xylem and phloem within a vascular bundle, it indicates that the bundle is capable of secondary growth.

4. **Types of Vascular Bundles**:
- **Conjoined**: Xylem and phloem are arranged in the same radius.
- **Open**: Cambium is present between xylem and phloem, allowing for secondary growth.
- **Closed**: Cambium is absent, and the bundle does not allow for secondary growth.
- **Collateral**: Xylem is positioned inside and phloem outside, but this does not necessarily indicate the presence of cambium.

5. **Conclusion**:
- Since the question specifies that cambium is present inside the vascular bundle, the correct classification of the vascular bundle is "open."

### Final Answer:
The vascular bundle is said to be **open** when cambium is present inside it.