Choose the option for the correct statements.

(I) Ions are absorbed from the soil by both active and passive transport.

(II) Specific proteins in the membranes of root hair cells actively pump ions from the soil into the cytoplasm of apidermal cells.

(III) Transport proteins of endodermal cells are control points, where a plant adjusts the quantity and types of solutes hat reach the xylem.

(IV) Root endodermis because of the layer of suberin has the ability to actively transport ions in one direction only.