Plants' Xylem is a complicated tissue that transports water and other nutrients to the plants. The Xylem of plants is a complex tissue that delivers water and other nutrients to the roots of the plants. Only minerals and water are transported from the roots through the Xylem. Food materials created by the green sections of the plant are transported through phloem to other areas of the plant. At maturity, the Xylem is dead tissue with no cell contents. The living tissue, but not the nucleus, is phloem. Tracheids exist with vascular systems (Pteridophytes and gymnosperms) while only angiosperms have Xylem. The effectiveness of the Tracheids is because they lack holes, they are less effective at transmitting water. Phloem is more efficient because they are perforated, they are more efficient at conducting water.