On studying the T.S. of an organ, a student found , xylem and phloem are arranged in an alternate manner on different radii , this organ will be :

Options

A. Dicot root
B. Dicot leaf
C. Monocot stem
D. Dicot stem

Answer

To solve the question regarding the arrangement of xylem and phloem in an organ, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Arrangement**: The question states that xylem and phloem are arranged in an alternate manner on different radii. This indicates a specific type of vascular bundle arrangement.

2. **Identifying Vascular Bundle Types**: In plants, vascular bundles can be arranged in different ways:
- **Collaterally**: Xylem and phloem are on the same radius.
- **Radially**: Xylem and phloem are on different radii, alternating with each other.

3. **Recognizing Radial Arrangement**: The arrangement described in the question (xylem and phloem on different radii) is known as a radial arrangement. This is commonly found in roots.

4. **Comparing Organ Types**:
- **Dicot Root**: Typically exhibits a radial arrangement of xylem and phloem.
- **Dicot Stem**: Usually has a collateral arrangement.
- **Monocot Stem**: Also has a collateral arrangement.
- **Leaf**: Generally does not show radial arrangement.

5. **Conclusion**: Since the arrangement of xylem and phloem in an alternate manner on different radii is characteristic of a dicot root, we conclude that the organ studied is a **Dicot Root**.

### Final Answer:
The organ will be a **Dicot Root**.

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