list of some the plant materials is given below:
* Dicotyledonae roots
* Dicotyledonae stem
* Monocotyledonae roots
Which plant material have bundle cap in the primary internal structure?

Answer

To determine which plant material has a bundle cap in its primary internal structure, we need to analyze the given options: Dicotyledonae roots, Dicotyledonae stem, and Monocotyledonae roots.

### Step-by-Step Solution:

1. **Understanding Bundle Cap**:
- A bundle cap is a protective structure that surrounds the vascular bundles in certain plants. It is primarily composed of sclerenchyma tissue, which provides support and strength.

2. **Identifying the Plant Types**:
- **Dicotyledonae (Dicots)**: These plants typically have vascular bundles arranged in a ring and often have a bundle cap.
- **Monocotyledonae (Monocots)**: These plants usually have scattered vascular bundles and do not have a bundle cap.

3. **Analyzing Each Option**:
- **Dicotyledonae Roots**: While dicot roots have vascular bundles, they do not typically have a bundle cap.
- **Dicotyledonae Stem**: In dicot stems, each vascular bundle is surrounded by a sclerenchyma patch (the bundle cap), providing additional support.
- **Monocotyledonae Roots**: Monocots do not have a bundle cap; their vascular bundles are surrounded by a bundle sheath instead.

4. **Conclusion**:
- The only plant material from the list that has a bundle cap in its primary internal structure is the **Dicotyledonae Stem**.

### Final Answer:
**Dicotyledonae Stem**

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