Mature sclerenchyma cells have

Mature sclerenchyma cells have

cellulose wall and are living
lignified wall and are living
suberized wall and are dead
lignified wall and are dead
This question was previously asked in
UPSC CDS-2 – 2020
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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