In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order :

Step-by-step solution

Root shows the following regions Root cap or calyptra - cap like protective covering over tip of the root Meristematic region is the subapical position Zone of elongation - receives new cells from the growing point Root hair zone - is the zone of differentiation Zone of mature cells - have thick walled impermeable cells.