The root tip is on the bottom of the Zone of elongation and the zone of elongation is where the cells are and the cells push the zone of elongation and the root tip gets the water and sends the water...
The difference results from the Biological Principle that is known as Differentiation, or in another word, Determination. Root cells are, by more ways than one, determined to function as such, while...
the root cap. the root cap is made of dead cells and helps protect the multiplying xylem cells. the xylem cells absorb the water and help the root grow longer