EVERYDAY SCIENCE

Detailed explanation-1: -There are two types of sclerenchyma (Figure 4.4): (1) fibers, which are long, very narrow cells with sharply tapering end walls; and (2) sclereids, which are isodiametric to irregular or branched in shape. Fibers function in mechanical support of various organs and tissues, sometimes making up the bulk of the tissue.

Detailed explanation-2: -Sclereids are wide cells, while fibres are elongated cells. Fibres and sclereids are both sclerenchyma cells having a thick, lignified secondary cell wall. The form of the cells is the fundamental distinction between fibres and sclereids.

Detailed explanation-3: -Sclerenchyma fibers can be found below the epidermis of monocotyledons, organized in two or three layers of cells. They are known as cortical fibers. Perivascular sclerenchyma fibers are found protecting vascular bundles. Xylary sclerenchyma fibers are components of the primary xylem.

Detailed explanation-4: -There are three types of Sclereids namely brachy-sclereids, macro-sclereids and osteo-sclereids.

Detailed explanation-5: -Hint: Fibers and sclereids, both are sclerenchyma cells found in the plants, and they are simple and non-living tissues and the main function of these cells is to provide the structural support to the plants. And both cells have thick deposits of lignin in their walls.