Sclereids possess

Options

A. Tapering ends
B. Highly thickened wall
C. Hemicelluloseic wall
D. Broad lumen.

Answer

**Step-by-Step Solution:**

1. **Understanding Sclereids**: Sclereids are specialized cells known as sclerenchyma cells. They are often referred to as "stone cells" because of their hard texture.

2. **Characteristics of Sclereids**:
- **Shape**: Sclereids can vary in shape; they may be round or oval.
- **Cell Wall**: They possess very thick and hard cell walls, which are lignified. This means that the walls contain lignin, a complex organic polymer that provides rigidity and strength.
- **Lumen Size**: The lumen (the inner space of the cell) of sclereids is very small or narrow.

3. **Evaluating the Options**:
- **Option 1: Tapering Ends**: This is incorrect because sclereids do not have tapering ends; they are typically round or oval.
- **Option 2: Highly Thickened Wall**: This is correct. Sclereids have highly thickened and hard cell walls.
- **Option 3: Hemicellulosic Cell Wall**: This is incorrect. Sclereids have lignified cell walls, not hemicellulosic.
- **Option 4: Broad Lumen**: This is incorrect. Sclereids have a narrow or small lumen.

4. **Conclusion**: Based on the analysis of the options, the correct answer is that sclereids possess highly thickened walls.

**Final Answer**: Sclereids possess highly thickened walls.

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