How do mineral ions get into the xylem cells of a plant root by way of the intracellular route?
◦ They are actively taken in to the xylem of root hairs.
◦ They travel between root cells to the xylem and then enter a xylem vessel.
◦ They move in solution through cell walls of the endodermis.
◦ They are taken up by root hair cells and transferred from cell to cell via plasmodesmata.