What essential role does the root endodermis play during mineral absorption in plants?

Explanation

Unlike water, all minerals cannot be passively absorbed by the roots. Therefore most minerals must enter the root by active absorption into the cytoplasm of epidermal cells.
Transport proteins of endodermal cells are control points, where a plant adjusts the quantity, and types of solutes that reach the xylem. It is important to note that the root endodermis is because of the layer of suberin that has the ability to actively transport ions in one direction only.