Schlerenchyma Cells

Schlerenchyma
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.
There are two types of schlerenchyma. 1. Fibers 2.Schleroids
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.
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.

1. 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

2. 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.

3. SCHLERENCHYMA

4. Types of schlerenchyma
•There are two types of schlerenchyma.
1. Fibers
2.Schleroids

5. 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.

6. Cross section of schlerenchyma fibers

7. Fibers in sugarcane leaf

8. Fibers in poa leaf

9. Fibers in cosmos stem

10. Fresh mount of a schleroid

11. Fibers in Cosmos stem

12. Fibers in sugarcane leaf

13. Xylary fibers

14. Gelatinous fibers

15. Schleroids
• Typically short cells.
• Strongly lignified and provided with
numerous simple pits.

16. Origion and development of fibers
and schleroids
Fibers:
Procambium and vascular cambium
Ground Meristem
Protoderm( some Poaceae and Cyperaceae).

17. 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.