Root cell in which the movement is always symplastic is

Options

A. Root hair
B. Endodermal cell
C. Root xylem
D. Pericycle

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks about a specific type of root cell where the movement is always symplastic. To answer this, we need to understand what "symplastic" means in the context of plant biology.

2. **Defining Symplastic Movement**: Symplastic movement refers to the transport of water and nutrients through the cytoplasm of plant cells. This process involves the protoplasm (the living part of the cell) and occurs through plasmodesmata, which are small channels connecting adjacent plant cells.

3. **Identifying Root Structures**: In plant roots, there are various structures involved in water absorption, including root hairs, endodermal cells, root cortex, and pericycle. Each of these plays a different role in the absorption and movement of water and nutrients.

4. **Role of Root Hairs**: Root hairs are the smallest and most numerous structures on the roots. They are specialized for the absorption of water and minerals from the soil. Since they are directly involved in the absorption process, they facilitate symplastic movement as water enters the root hair cells and moves through the cytoplasm to adjacent cells.

5. **Conclusion**: Given that the question specifies "the movement is always symplastic," the root cell that fits this description is the root hair. This is because root hairs are primarily responsible for the initial absorption of water and nutrients, and their movement is symplastic due to the involvement of protoplasm.

6. **Final Answer**: Therefore, the root cell in which the movement is always symplastic is the **root hair**.

---