the conducting tissue found in vascular plants that functions in transportation of materials throughout the plant, but does not lend structure support to the stem is A. xylem B. phloem C.sporopollenin D.endosperm e. LYCOPHYLL Solution Answer : B. Phloem Phloem is responsible for the transporting sugars,proteins, and other organic molecules in plants. xylem is responsible for the transport of water and water soluble nutrients,taken up by the roots and also primary component of wood. Vascular plants are able to higher than other plants due to the rigidity of xylem cells, which support the plant..