Biology, asked by sachethan22, 11 months ago

Differences between sclerenchyma fibres and sclereids

Answers

Answered by anamikapradeep7
62

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The main difference between fibres and sclereids is that fibres are unbranched, elongated cells whereas sclereids are short, isodiametric or irregular cells that may be branched or unbranched. Moreover, fibres have tapering end walls while the end walls of the sclereids are blunt.  

Fibres and sclereids are two types of sclerenchyma cells that differ in shape. Fibres originate from meristematic cells while sclereids are formed by the secondary wall thickening of parenchyma cells.

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Answered by shaikhaa9572
32

Fibres: Thick, elongated, spindle-shaped cells with pointed tips

Sclereids: Sclerenchyma cells with highly-thickened lignified cell walls having a narrow lumen

Shape

Fibres: Elongated cells

Sclereids: Broad cells with irregular shape

End Walls

Fibres: Tapering end walls

Sclereids: Blunt end walls

Branching

Fibres: Unbranched

Sclereids: Branched or unbranched

Origin

Fibres: From meristematic cells

Sclereids: By the secondary wall thickening of parenchyma cells

Organization

Fibres: Generally occur in bundles

Sclereids: Singly or loose groups

Occurrence

Fibres: Cortex, pericycle, xylem, and phloem

Sclereids: Cortex, pith, pulp of fruits, and fruit walls

Function

Fibres: Provides mechanical strength

Sclereids: Provides stiffness

Conclusion

Fibres are elongated cells while sclereids are broad cells. Both fibres and sclereids are sclerenchyma cells with a thick, secondary cell wall that is lignified. The main difference between fibres and sclereids is the shape of the cells.

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