Why is epidermis important for the plants?

1. Strength: Collenchyma is a living mechanical tissue which provides both mechanical strength as well as flexibility. Because of collenchyma, plant organs can bend without breaking.

2. Growth: Collenchyma allows growth and elongation of organs.

3. Storage: Being living tissue, collenchyma stores food.

4. Photosynthesis: Collenchyma cells may contain chloroplasts and take part in photosynthesis.