Passage cells are found in

Options

A. Pericycle
B. Xylem element
C. Phloem element
D. Endodermis

Answer

**Step-by-Step Solution:**

1. **Understanding Passage Cells:**
- Passage cells are specialized cells that are characterized by their thin walls. They play a crucial role in the transport of water and nutrients.

2. **Location of Passage Cells:**
- These cells are specifically located in the **endodermis** of the root. The endodermis is the innermost layer of the cortex in plant roots.

3. **Function of Passage Cells:**
- The primary function of passage cells is to facilitate the movement of water from the cortex (the outer layer of the root) to the pericycle (the layer just inside the endodermis). This is essential for the plant's water uptake and overall health.

4. **Analyzing the Options:**
- The options provided are:
- a) Pericycle
- b) Xylem element
- c) Phloem element
- d) Endodermis
- Based on our understanding, passage cells are not found in the pericycle, xylem, or phloem elements. They are specifically found in the endodermis.

5. **Conclusion:**
- Therefore, the correct answer to the question "Passage cells are found in" is **d) Endodermis**.

---