Cells of this tissue are living and show angular wall thickning. They also provide mechanical support. The tissue is

1. xylem

2. sclerenchyma

3. collenchyma

4. epidermis

Class 11 pg 86
(c) Collenchyma This tissue provide mechanical support mainly to herbaceous young growing stem. The cells have angular thickening at the corners. Whereas, xylem is conductive complex tissue, transports water and mineral.
Sclerenchyma is dead at maturity, present in hard areas of the plant. Epidermis is usually a single layered structure present on the entire body surface of the plant.