Endodermis is a part of

Options

A. Medulla
B. Stele
C. Cortex
D. Exodermis

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of a Plant:**
- In flowering plants, the root and stem structures are organized into different layers. These layers include the epidermis, cortex, endodermis, and stele.

2. **Identifying the Endodermis:**
- The endodermis is defined as the innermost layer of the cortex in land plants. It acts as a boundary between the cortex and the stele.

3. **Function of the Endodermis:**
- The endodermis has a unique feature known as the Casparian strip, which is a band of cell wall material that is impregnated with hydrophobic substances. This structure helps regulate the flow of water and nutrients into the stele.

4. **Analyzing the Options:**
- Option A: Medulla - This term typically refers to the inner region of certain structures, but it is not directly related to the endodermis.
- Option B: Axial - This term generally refers to the central axis of a plant but does not pertain to the endodermis.
- Option C: Cortex - The endodermis is indeed a part of the cortex, as it is the innermost layer of this region.
- Option D: Exodermis - This is the outer layer of the cortex, which is not related to the endodermis.

5. **Conclusion:**
- Based on the definitions and functions discussed, the endodermis is a part of the cortex. Therefore, the correct answer is **Option C: Cortex**.

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