We get a crunchy and granular feeling when we chew pear fruit. Why ??
The shape and size of sclerenchyma cells might vary. Sometimes they are broad and almost isodiametric without pointed ends. Their walls are very heavily thickened so that lumen is almost obliterated . Such special types of sclerenchyma cells are known as stone cells or scelereids or sclerotic cells. Due to the presence of the scelereids we get a gritty feeling when we chew pear ,apple or nuts