NEET BIOLOGY

Detailed explanation-1: -Sclerenchyma is a type of simple permanent tissue. Simple tissues are made up of a group of uniform cells having similar structures and perform the same function. Other than sclerenchyma, collenchyma and parenchyma are also simple tissues.

Detailed explanation-2: -Sclerenchyma tissue, when mature, is composed of dead cells that have heavily thickened walls containing lignin and a high cellulose content (60%–80%), and serves the function of providing structural support in plants. Sclerenchyma cells possess two types of cell walls: primary and secondary walls.

Detailed explanation-3: -The sclerenchyma consists of two types of cells sclerenchyma fibres and sclereids. Main function of Sclerenchyma: This tissue provides mechanical strength to the stem. The fibres of jute, cotton, hemp and husk of coconut are made up of sclerenchyma tissue.

Detailed explanation-4: -: a protective or supporting tissue in higher plants composed of cells with walls thickened and often lignified.

Detailed explanation-5: -Answer. Sclerenchyma cells are elongated, dead cells with lignin deposits in their cell wall. They have no intercellular gaps. Sclerenchyma is found in the covering of seeds and nuts, around the vascular tissues in stems and the veins of leaves. Sclerenchyma provides strength to the plant.