What is Sclerenchyma?

Sclerenchyma is one of the two types of supporting or mechanical tissues in plants, the other being collenchyma. Sclerenchyma cells are characterized by thick, lignified secondary cell walls that provide rigidity and support to plant tissues. The sclerenchyma diagram shows that it is typically present in regions of the plant that have stopped elongating, such as stems, leaves, and vascular tissues.

Also Read: Plant Cell

There are two main types of sclerenchyma cells: sclereids and fibers.

Sclereids

• Sclereids, also known as stone cells, are relatively short and irregular in shape.
• They occur singly or in small groups and are found in various plant organs, including fruit pulp, seed coats, and nut shells.
• The thick, lignified cell walls of sclereids make them extremely hard and resistant to mechanical damage, providing protection to underlying tissues.
• In fruits, sclereids contribute to the gritty texture of some fruits, such as pears.

Also Read: Parenchyma Diagram

Fibers

• Fibers are elongated cells that occur in bundles or strands, providing strength and support to plant tissues.
• They are commonly found in the vascular tissues of stems and leaves, as well as in the outer layers of seeds and fruit walls.
• Fibers have thick secondary cell walls that are highly lignified, making them strong and resistant to stretching and bending.
• The presence of fibers in wood gives it its characteristic strength and hardness, making it a valuable material for construction and manufacturing.

A sclerenchyma diagram shows elongated cells with heavily lignified secondary cell walls, contributing to structural support and rigidity in plants. Sclerenchyma diagram class 9 helps students learn about this type of plant tissue which is characterized by thickened, lignified cell walls that provide structural support and rigidity to plants. This is found in various plant parts, such as stems, leaves, and vascular tissues, sclerenchyma cells contribute to plant strength and durability.

The sclerenchyma diagram with label is shown below: