The stele of a dicot stem includes all,except

Options

A. Vascular bundles
B. Pericycle
C. pith
D. Endodermis

Answer

To solve the question regarding the components of the stele in a dicot stem, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Stele**: The stele in a dicot stem consists of various components that are crucial for the plant's vascular system. The main components include xylem, phloem, and pericycle.

2. **Identify the Components**:
- **Xylem**: Responsible for water and mineral transport from the roots to the rest of the plant.
- **Phloem**: Responsible for the transport of nutrients and sugars produced by photosynthesis.
- **Pericycle**: A layer of cells that surrounds the vascular bundles and helps in the formation of lateral roots.

3. **Consider the Role of Endodermis**: The endodermis is a layer of cells that serves as a protective barrier and regulates the flow of water and nutrients into the vascular system. However, it is located outside the stele.

4. **Determine the Correct Answer**: Since the question asks for the component that is not part of the stele, we conclude that the endodermis is the correct answer because it is situated outside the stele structure.

5. **Final Conclusion**: The stele of a dicot stem includes xylem, phloem, and pericycle, but does not include the endodermis.

### Final Answer:
The stele of a dicot stem includes all, except the endodermis.

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