Which of following plant cells are without vacoules without nuclei and are dead-

Options

A. Cambium cells
B. Xylem vessels
C. Root hairs
D. Companion cells

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for plant cells that are characterized by being without vacuoles, without nuclei, and are dead.

2. **Identifying Plant Cell Types**: We need to consider various types of plant cells and their characteristics. Common plant cells include parenchyma, collenchyma, sclerenchyma, xylem vessels, phloem, root hair cells, and companion cells.

3. **Analyzing Cell Characteristics**:
- **Vacuoles**: Most plant cells have vacuoles, which are storage organelles. However, certain specialized cells may lack them.
- **Nuclei**: Most living plant cells have nuclei, but some specialized cells may lose their nuclei as they mature.
- **Dead Cells**: Dead cells typically do not have protoplasm, which includes the nucleus and vacuoles.

4. **Focusing on Xylem Vessels**: Among the various types of plant cells, xylem vessels are known to be specialized for water transport. They are:
- Dead at maturity.
- Lack protoplasm, which means they do not have nuclei or vacuoles.
- Have lignin in their cell walls, which contributes to their rigidity and functionality.

5. **Conclusion**: Based on the characteristics analyzed, the correct answer to the question is xylem vessels. They are the only plant cells that fit the criteria of being without vacuoles, without nuclei, and dead.

**Final Answer**: Xylem vessels.

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