In plants, a group of cells function together to form an epidermis, an outer layer. The epidermis of plants forms which of the following?
The cortex is the outermost layer of the stem and roots of a plant. This part plays a vital role which varies according to function and situation. Firstly, it serves to separate the external and internal environment of the plant and it's ecosystem. Secondly, it serves as a reservior of plants where lipids are stored in those between cavities of the cortex.