Sclerenchyma cells

Definition

Sclerenchyma cells are specialized plant cells that provide structural support due to their thickened, lignified cell walls. These cells are typically dead at maturity and contribute to the rigidity of stems and other plant structures.

5 Must Know Facts For Your Next Test

1. Sclerenchyma cells have two main types: fibers and sclereids.
2. These cells are essential for the mechanical strength and rigidity of plant tissues.
3. Lignin, a complex polymer, is responsible for the thickening of sclerenchyma cell walls.
4. Unlike parenchyma and collenchyma cells, sclerenchyma cells are usually dead at maturity.
5. Sclerenchyma fibers are elongated and found in bundles, often associated with vascular tissues.

Review Questions

Related terms

Parenchyma Cells: These are living plant cells with thin cell walls that function in photosynthesis, storage, and tissue repair.

Collenchyma Cells: These living plant cells have unevenly thickened walls that provide flexible support for growing parts of plants.

Lignin: A complex organic polymer deposited in the cell walls of many plants, making them rigid and woody.