as compared to a dicot root, a monocot root has

Options

A. inconsipicuous annual rings
B. relatively thicker peridem
C. more aboundent secondary xylem
D. many xylem bundles

Answer

To answer the question "As compared to a dicot root, a monocot root has," we will analyze the characteristics of monocot and dicot roots step by step.

### Step-by-Step Solution:

1. **Understanding Root Structure**:
- Roots can be classified into two main types: dicot roots and monocot roots.
- Dicot roots typically have a specific arrangement of vascular tissues, while monocot roots have a different arrangement.

2. **Vascular Bundles**:
- In dicot roots, the vascular bundles (which consist of xylem and phloem) are usually arranged in a ring and are fewer in number (typically 2 to 6).
- In contrast, monocot roots have a higher number of vascular bundles. They can be described as exarch to polyarch, meaning they can have 6 or more vascular bundles.

3. **Secondary Growth**:
- Dicot roots often exhibit secondary growth, which leads to the formation of annual rings and a thicker periderm. However, monocot roots do not show secondary growth, which means they lack annual rings and a relatively thicker periderm.

4. **Conclusion**:
- Given the options provided:
- **Inconspicuous**: Incorrect, as both types have visible structures.
- **Annual rings**: Incorrect, as monocots do not form annual rings.
- **Relatively thicker periderm**: Incorrect, as monocots do not have a thicker periderm due to lack of secondary growth.
- **More abundance of xylem bundles**: Correct, as monocot roots have many xylem bundles compared to dicot roots.

Thus, the correct answer is that a monocot root has **more abundance of xylem bundles** compared to a dicot root.