Vascular bundle without cambium 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 without cambium is called -", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of 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. **Identify the Role of Cambium**: Cambium is a layer of tissue in plants that is responsible for secondary growth. It is located between the xylem and phloem in some vascular bundles.

3. **Differentiate Between Types of Vascular Bundles**:
- **Open Vascular Bundles**: These contain cambium and are capable of secondary growth. They are typically found in dicotyledons (dicots).
- **Closed Vascular Bundles**: These lack cambium and do not allow for secondary growth. They are commonly found in monocotyledons (monocots).

4. **Conclude the Definition**: Since the question specifically asks for a vascular bundle without cambium, we can conclude that this type of vascular bundle is referred to as a **Closed Vascular Bundle**.

5. **Select the Correct Option**: Based on the definitions and characteristics discussed, the correct answer to the question is **Closed Vascular Bundle**.

### Final Answer:
The vascular bundle without cambium is called **Closed Vascular Bundle**.

---