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Schlerenchyma Cells

Sclerenchyma cells are specialized plant cells providing strength and support, found in all plants. There are two types: fibers, which are long and spindle-shaped, and schleroids, which are shorter and lignified. These cells help plants endure strain and pressure, maintaining structural integrity.

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Assignment Plant Anatomy Topic Schlerenchyma Submitted to: Sir Ghulam Sarwar Submitted by: Arooj Khalid Roll No:12, Session: 2013-2017 B.S (HONS.) Botany Department of Life Sciences The Islamia University of Bahawalpur
Sclerenchyma • Definition: Schlerenchyma cells are specialized plant cells that exist to provide strength and support. They are present in all kinds of plants including grasses,trees and flowering plants. Their cell wall consists of cellulose,lignin and hemicellulose.
SCHLERENCHYMA
Types of schlerenchyma • There are two types of schlerenchyma. 1. Fibers 2.Schleroids
Fibers • Long spindle shaped cells. They usually occur in strands. Within a stand ,the fibers overlap. Walls are not highly hydrated. Supporting elements in plant parts that are no elongating.
Cross section of schlerenchyma fibers
Fibers in sugarcane leaf
Fibers in poa leaf
Fibers in cosmos stem
Fresh mount of a schleroid
Fibers in Cosmos stem
Fibers in sugarcane leaf
Xylary fibers
Gelatinous fibers
Schleroids • Typically short cells. • Strongly lignified and provided with numerous simple pits.
Origion and development of fibers and schleroids  Fibers: Procambium and vascular cambium Ground Meristem Protoderm( some Poaceae and Cyperaceae).
Function of Schlerenchyma Schlerenchyma cells are strong,thick cells that provide most of the support in plant. Enable plant organs to withstand various strain, bending, weight and presssure without damage to the thin softer cells.