Which has living cells

Options

A. Xylem
B. Phloem
C. Both
D. none of these

Answer

### Step-by-Step Solution:

1. **Identify the Options**: The question presents four options regarding which has living cells:
- a) Xylem
- b) Phloem
- c) Both
- d) None

2. **Understand the Function of Xylem and Phloem**:
- **Xylem**: This tissue is primarily responsible for the transport of water and minerals from the roots to the rest of the plant. It consists mainly of dead cells (like tracheids and vessel elements) that form hollow tubes for efficient water transport.
- **Phloem**: This tissue is responsible for transporting the products of photosynthesis (mainly sugars) from the leaves (where they are produced) to other parts of the plant (like roots and growing regions). Phloem is composed of living cells.

3. **Analyze the Living Cells in Each Tissue**:
- **Xylem**: Contains mostly dead cells; hence, it does not have living cells.
- **Phloem**: Contains living cells, including sieve tubes and companion cells, which are essential for its function.

4. **Conclusion**: Since only phloem contains living cells, the correct answer to the question is **b) Phloem**.

### Final Answer:
The correct option is **b) Phloem**.