Cell wall of lignified cell is :–

Options

A. Semipermeable and dead
B. Permeable and living
C. Impermeable and dead
D. Impermeable and living

Answer

To answer the question "Cell wall of lignified cell is:", we will analyze each option provided and determine the correct characteristics of the cell wall in lignified cells.

### Step-by-Step Solution:

1. **Understanding Lignified Cells**:
- Lignified cells are specialized plant cells that have thickened cell walls due to the presence of lignin, a complex organic polymer. This lignin provides structural support and rigidity to the plant.

2. **Evaluating Option A: Semi-permeable and Dead**:
- A semi-permeable membrane allows certain molecules to pass through while blocking others. However, lignified cell walls are not semi-permeable; they are generally impermeable due to the presence of lignin. Therefore, this option is incorrect.

3. **Evaluating Option B: Permeable and Living**:
- A permeable cell wall would allow substances to pass through freely. Since lignified cell walls are impermeable and do not facilitate the movement of substances, this option is also incorrect. Additionally, lignified cells are typically dead at maturity.

4. **Evaluating Option C: Impermeable and Dead**:
- This option states that the cell wall is impermeable and that the cell is dead. This is accurate because lignified cells do not allow substances to pass through (impermeable) and they lose their physiological functions and become dead at maturity. Therefore, this option is correct.

5. **Evaluating Option D: Impermeable and Living**:
- While the cell wall is indeed impermeable, lignified cells are not living at maturity. Thus, this option is incorrect.

### Conclusion:
The correct answer is **Option C: Impermeable and Dead**.

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