Which statement best describes the difference between xylem and phloem? a..xylem transports water and nutrients in the plant, and phloem transports water and sugar. b..xylem cells make up vascular tissue, and phloem cells make up ground and dermal tissue. c..xylem tissue is found at the growing parts of plants, and phloem is found on the outer part of plants. d..xylem cells are thin-walled and tubular, and phloem cells are thick walled and strengthened by lign

The correct option is C.
Xylem and phloem are vascular tissues which are present in plants. Their principal function is to transport water, minerals, organic nutrients and other needed materials from the root of the plants to the different parts of the plants where these materials are needed. It is the responsibility of xylem to transport water and specific nutrients from the root to the other parts of the plant while the phloem is responsible for transporting soluble organic matters to the areas where they are needed in plants. Xylem is made up of living and dead tissues and it is surrounded by phloem cells, which are living cells. That is, xylem is found in the inner part of the plant while phloem is found at the outer part of the plant.