difference between Xylem and Phloem
|xylem transports water and minerals from the roots to aerial parts of the plant||Phloem transports food and organic nutrients such as sugar and amino acids from leaves to storage organs and growing parts of plant.|
|On maturity Xylem exists as non-living tissue.||phloem exists as living cells.|
|Transportation in Xylem is unidirectional i.e. can only move upward.||Transportation in phloem is bidirectional i.e. can move up or down the plants stem.|
|Structure of xylem is tubular with hard walled cells||Phloem is also tubular but with soft walled cells.|
They are both types of vascular tissue in plants (like arteries and veins in us). Phloem moves food (sugar rich sap, in most cases) down the plant from the leaves to the roots, and xylem moves water from the roots up to the rest of the plant tissue. They are structurally different too, and it can get more complicated then that but that's what your textbook is for.