Question

Why sclerenchyma is dead at maturity

Answer 1

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Sclerenchyma consists of long, narrow cells.

They have very thick and lignified wall.

Due to the presence of this thick and lignified wall they are not able to perform functions like a normal cell.

Hence in due course of time they die and serve the function of mechanical support.

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Answer 2

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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.