Question

Write a short note on scalenchyma and function also

Answer 1

Sclerenchyma, in plants, support tissue composed of any of various kinds of hard woodycells. Mature sclerenchyma cellsare 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. Sclerenchyma is one of the three types of ground, or fundamental, tissue in plants; the other two types are parenchyma (living thin-walled tissue) and collenchyma(living support tissue with irregular walls). Sclerenchyma cells occur in many different shapes and sizes, but two main types occur: fibres and sclereids




FUNCTIONS:These cells provide mechanical strength to the plant body and are supporting tissues.These cells provide hardness and strength to the seed coat.  Scelereids are responsible for the hardness of date seeds and walnuts shells.Young living fibres store starch granules.Fibres probably play role in the transport of solutes to the plants.Long, rigid fibres have potential of fibres of commercial importance.Grittiness in guava is due to presence of sclereids.

Answer 2

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