Mature sclerenchyma cells have

[amp_mcq option1=”cellulose wall and are living” option2=”lignified wall and are living” option3=”suberized wall and are dead” option4=”lignified wall and are dead” correct=”option4″]

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UPSC CDS-2 – 2020

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Mature sclerenchyma cells are characterized by having thick, lignified secondary cell walls and being dead at functional maturity.

Sclerenchyma provides mechanical support to the plant. The lignified walls make them rigid and strong. The two main types of sclerenchyma cells are fibres and sclereids.

Parenchyma and collenchyma cells are living at maturity and typically have cellulose walls. Collenchyma walls may be thickened but usually lack lignin. Suberized walls are found in cork cells (phellem).

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