In dicot stems, cambium present between primary xylem and primary phoem is

Options

A. fascicular cambium
B. intrafascicular cambium
C. interfascicular cambium
D. both a and b

Explanation

To answer the question regarding the cambium present between primary xylem and primary phloem in dicot stems, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Cambium**:
- Cambium is a layer of actively dividing cells found in plants. It plays a crucial role in the growth of the plant by allowing for secondary growth, which increases the thickness (girth) of stems and roots.

2. **Identifying the Location of Cambium**:
- In dicot stems, cambium is specifically located between the primary xylem (which conducts water and minerals) and primary phloem (which transports nutrients).

3. **Types of Cambium**:
- The cambium found between primary xylem and primary phloem is known as **fascicular cambium**. This cambium is part of the vascular bundles and is responsible for the growth of the vascular tissues.

4. **Understanding Intrafascicular Cambium**:
- The term **intrafascicular cambium** refers to the cambium that is located within the vascular bundles, specifically between the xylem and phloem. It also contributes to the secondary growth of the plant.

5. **Conclusion**:
- Therefore, in dicot stems, the cambium present between the primary xylem and primary phloem is both **fascicular cambium** and **intrafascicular cambium**. Hence, the answer is both A and B.

### Final Answer:
The cambium present between primary xylem and primary phloem in dicot stems is **fascicular cambium** and **intrafascicular cambium**.

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