Class 11 NEET Biology Anatomy of Flowering Plants Questions Part 1

(a) : Sclereids are a type of sclerenchyma cells. They are short or irregular, their walls are very thick, irergular and the lumen is very narrow. These are dead cells and do not perform any metabolic functions. They show different types of lignin depositions and also have pits. They are present in hard parts like endocarp of coconut, hard seed coats fruit pulps. They are also called stone cells and are different types as brachysclereids, osteoclereids, macrosclereids, asterosclercids and fileform cells.