Conjoint and closed vascular bundles with no phloem parenchyma are observed in

Options

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

Answer

To solve the question regarding where conjoint and closed vascular bundles with no phloem parenchyma are observed, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Conjoint Vascular Bundles**: These are bundles where xylem and phloem are located together.
- **Closed Vascular Bundles**: These bundles do not have a cambium layer, meaning they do not have the ability to grow in thickness.
- **Phloem Parenchyma**: This is a type of tissue found in the phloem that is involved in the storage and transport of nutrients.

2. **Analyze the Options**:
- **Monocot Stem**: Monocot stems are known to have conjoint and closed vascular bundles, and they typically lack phloem parenchyma. This option fits the criteria.
- **Dicot Stem**: Dicot stems have conjoint and open vascular bundles, which means they do have a cambium layer. Therefore, this option is incorrect.
- **Monocot Roots**: Monocot roots typically have radial vascular bundles, not conjoint. Hence, this option is also incorrect.
- **Dicot Roots**: Similar to monocot roots, dicot roots also have radial vascular bundles, which do not meet the criteria of being conjoint and closed. Thus, this option is incorrect as well.

3. **Conclusion**:
- Based on the analysis, the only option that fits the description of having conjoint and closed vascular bundles with no phloem parenchyma is the **Monocot Stem**.

### Final Answer:
Conjoint and closed vascular bundles with no phloem parenchyma are observed in **Monocot Stem**.

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