Sclerenchyma tissue is a …………….tissue.
(1) Living and non-mechanical
(2) Dead and mechanical
(3) Living and mechanical
(4) Dead and non-mechanical.

Answer

**Step-by-Step Solution:**

1. **Understanding Sclerenchyma Tissue**: Sclerenchyma is one of the three fundamental tissues in plants, alongside collenchyma and parenchyma. It is primarily known for its role in providing mechanical support.

2. **Characteristics of Sclerenchyma**: Sclerenchyma cells are characterized by having thick and tough cell walls. This thickness is due to the presence of lignin, a complex organic polymer that strengthens the cell walls.

3. **State of Cells**: A key feature of sclerenchyma is that the cells are typically dead at maturity. They lose their protoplast (the living part of the cell), which means they do not contain living cellular components.

4. **Function**: The primary function of sclerenchyma tissue is to provide mechanical support to the plant. The thick, lignified walls contribute to the rigidity and strength of plant structures.

5. **Evaluating Options**:
- (1) Living and non-mechanical: Incorrect, as sclerenchyma is dead and provides mechanical support.
- (2) Dead and mechanical: Correct, as sclerenchyma is dead and provides mechanical support.
- (3) Living and mechanical: Incorrect, as sclerenchyma is dead.
- (4) Dead and non-mechanical: Incorrect, as sclerenchyma provides mechanical support.

6. **Conclusion**: The correct answer is (2) Dead and mechanical.

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