A dicot root can be identified by

Options

A. exarch vascular bundles
B. endarch vascular bundles
C. presence of numerous xylem bundles
D. presence of large pith

Answer

### Step-by-Step Solution:

1. **Understanding Vascular Bundles**: In dicot roots, the vascular bundles are arranged in a specific manner. They consist of both xylem and phloem tissues.

2. **Identifying the Arrangement**: The vascular bundles in dicot roots are typically arranged in a radial pattern. This means that the xylem and phloem are positioned alternately around the center of the root.

3. **Recognizing the Number of Bundles**: Dicot roots usually have a specific number of vascular bundles. They can have anywhere from two to six vascular bundles, which is a distinguishing feature of dicots.

4. **Understanding Xylem Structure**: In dicot roots, the xylem shows an exarch arrangement. This means that the protoxylem (the first xylem to develop) is located towards the outer part of the root, while the metaxylem (which develops later) is positioned towards the center.

5. **Observing the Pith**: Dicot roots typically have a poorly developed or absent pith, which is another characteristic that helps in identifying them.

6. **Conclusion**: Therefore, a dicot root can be identified by the presence of numerous vascular bundles arranged radially, the exarch arrangement of xylem, and the absence or poor development of the pith.