Xylem is one of the two types of transport tissue in vascular plants (phloem is the other). However, a secondary function of xylem tissue is to provide support for the plant. High [sugar] and thus lower [water] in sieve cells results in osmosis of water from outside sieve cells into the sieve cells. Xylem vessels have lignified walls (thickened with lignin, which is a complex aromatic compound) Function: Waterproof/impermeable; stops the inward collapse of the xylem vessel under tension Xylem can be defined as a complex tissue that is composed of four basic types of cell (tracheids, trachea, and xylem fibre and xylem parenchyma), remains in close association with phloem and has specialized functions like conduction of water and solutes, and mechanical strength. Explore the major difference between the two. The xylem is one of the conductive tissues in plants. Xylem and phloem in roots. The main function of xylem fibres is to perform the function of mechanical support.The walls are highly lignified and protoplasm is absent. Four independent phloem strands grow between each bar of the xylem cross. Xylem and Phloem are two different types of tissues which function by transporting minerals, water, nutrients, from the roots to other parts of the plant. Increased pressure at site of phloem loading and osmosis causes flow in sieve cells that is away from site of phloem loading. 3. The xylem and phloem are grown within the central section of a root called a ‘stele’. Xylem vessels are made up of cells known either as tracheids or vessel members. In eudicots, the xylem usually forms a cross of cells within the stele which runs the length of the root. It is a complex tissue composed of many types of cells. Functions of xylem:Conductive tissue: moving water from the roots through the stems to the leaves. This structure prevents the passage of damaging air bubbles from one xylem … Functions of Xylem and Phloem. Xylem and phloem together constitute the conducting tissues in plants. What is xylem? The main function of xylem cells is to carry water and soluble minerals from the root to the leaves of a plant. It is responsible for replacing water lost through transpiration and photosynthesis. Xylem is present in vascular plants and is made up of different types cells, such as … 4. Phloem translocates sugars made by photosynthetic areas of plants to storage organs like roots, tubers or bulbs. Water entering via osmosis can originate from xylem- but sugars do not enter xylem. Xylem cells form long tubes that transport materials and the mixture of water and nutrients that flows through the xylem cells is called xylem sap. Xylem transports water and soluble mineral nutrients from roots to various parts of the plant. 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