The casparian rings are found in

Options

A. monocot root
B. dicot root
C. monocot stem
D. dicot stem

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where Casparian rings are found. We need to identify the specific part of the plant where these structures are located.

2. **Identifying the Structures**: Casparian rings, also known as Casparian strips, are specialized structures found in the roots of higher plants. They are part of the endodermis, which is a layer of cells in the root.

3. **Differentiating Plant Types**: The question provides options: monocot root, dicot root, monocot stem, and dicot stem. We need to determine which of these types of plant roots contain Casparian rings.

4. **Locating Casparian Rings**: Casparian rings are specifically found in the endodermis of dicot roots. They are bands of cell wall material that are chemically different from the rest of the cell wall, often containing suberin and sometimes lignin.

5. **Function of Casparian Rings**: These structures serve an important function by blocking the passive flow of water and solutes into the stele (the central part of the root). This selective barrier helps regulate the movement of substances into the plant's vascular system.

6. **Conclusion**: Based on the above points, the correct answer to the question is that Casparian rings are found in the **dicot root**.

**Final Answer**: Casparian rings are found in the dicot root.

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