How many types of elements together make up the xylem tissue? Name them.
The xylem is prominently responsible in maintaining the hydration of plants. It transports the xylem sap across the plant length in a way to maintain the constant water supply throughout the plant. The gravitational forces promote the delivery of water across the extremities of the plants. The xylem tissue is comprehensively composed of 4 prominent cells, i.e. the tracheids, vessels, xylem parenchyma and xylem fibres. Tracheids are defined as long thin cells that allow water to travel within the cells and in turn provide structural support to the entire plant. The vessels elements comprises the major element of the water transporting system in the plants and aids in the effective transport of water from the roots to the leaves and other parts of the plant. The xylem parenchyma is engaged in the storage of essential constituents (for instance, starch, fats, tannins etc.) in the plant parts. Xylem parenchyma is inherently connected to vessels or tracheids through distinct units called tyloses.The prominent function of xylem fibres is to transport and the storage of water in the plants. Final answer The xylem therefore, forms an essential portion of the plant body. It forms the structural unit for the transport of water and active nutrients across the plant length. It maintains the hydration level of the plant according to the gravitational force implicated in all directions of the plants, thereby providing water and essential constituents across all extremities of the plants.
