Are there any other dead cells in plants other than sclerenchyma cells of sclerenchyma tissue. Please help.

ASA

Parenchyma cells have thin cellulosic cell walls. Collenchyma cells have thicker cellulosic walls and also may have pectin deposition in the corners. Sclerenchyma cells have thick lignified cell walls and are dead at maturity and provide protection to the different parts of the body. Epithelial cells are thin-walled and living.

There aren't much other tissues in plants that are entirely dead but there are components of phloem and xylem tissues that are dead.

Those of Xylem are:

Xylem Tracheids

Xylem Fibres

Xylem Vessels

Those of Phloem are:

Phloem fibers

Hope this helps and if u need any more tell me.

^_^