A vascular bundle without cambium in between xylem and phloem is called

Options

A. Radial
B. Closed
C. Open
D. Bicollateral

Answer

To solve the question "A vascular bundle without cambium in between xylem and phloem is called", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Components 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.
- Cambium is a layer of tissue that can divide to form new xylem and phloem.

2. **Identify the Types of Vascular Bundles**:
- There are different types of vascular bundles based on the presence or absence of cambium:
- **Radial Vascular Bundle**: Xylem and phloem are arranged in a radial pattern and separated by non-conductive tissue.
- **Closed Vascular Bundle**: Xylem and phloem are present but there is no cambium between them.
- **Open Vascular Bundle**: Xylem and phloem are separated by cambium.
- **Bipolar Vascular Bundle**: A specific arrangement where xylem and phloem are separated from a central xylem.

3. **Analyze the Options**:
- From the definitions:
- The **closed vascular bundle** is the one that specifically has no cambium between xylem and phloem.
- The **open vascular bundle** has cambium present.
- The **radial** and **bipolar** bundles do not fit the description of lacking cambium.

4. **Select the Correct Answer**:
- Based on the analysis, the correct answer to the question is **closed vascular bundle**.

### Final Answer:
A vascular bundle without cambium in between xylem and phloem is called a **closed vascular bundle**.