Newly-formed root cells begin to form different cell types in the
zone of elongation
zone of maturation
root meristem
zone of cell division

zone of maturation

Explanation:

The root is an extremely important structure for a vegetable as it acts by providing fixation, aiding in the absorption of water and nutrients, as well as by transporting and, in some cases, storing substances. It is a generally underground organ without chlorophyll. It differs from the stem portion by not having nodes and internodes.  Generally speaking, we can divide the root into some basic parts: cell multiplication zone, cell stretching zone and cell maturation zone.

In the region after the root elongation portion is the cell maturation zone. In this place, the cells undergo differentiation, that is, they mature and participate in the formation of the various root tissues. From this we can understand that newly formed root cells begin to form different cell types in the maturation zone.

answer; both surfaces of the membrane are nonpermeable