EVERYDAY SCIENCE

Detailed explanation-1: -Mature sclerenchyma cells are usually dead cells that have heavily thickened secondary walls containing lignin. The cells are rigid and nonstretchable and are usually found in nongrowing regions of plant bodies, such as the bark or mature stems.

Detailed explanation-2: -Sclerenchyma (Gr. scleros, hard + enchyma, infusion, in reference to the infusion of lignin in the secondary cell walls) are nonconductive cells that have a thick, lignified secondary cell wall, typically with pits, and that are dead at maturity.

Detailed explanation-3: -The sclerenchyma is called the dead tissue because it lack protoplasm and has thick secondary walls which do not elongate during cell growth. Hence, mature cells get destroyed inside the sclerenchyma tissues. Example: coconut, jute etc.

Detailed explanation-4: -Sclerenchyma cells are dead at maturity. They don’t thicken in response to external stimuli the way collenchyma can.

Detailed explanation-5: -Sclerenchyma is dead tissue. They give mechanical support to the plants.