Give a detailed idea of xylem tissue
Answers
Explanation:
plant vascular tissue that convey water and dissolved minerals from the roots to the rest of the plants and also provide physical support . Xylem tissue consists of a a variety of specialized, water conducting cells known as tracheary elements.
Hey mate.... here is your answer;
xylem, plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support. xylem tissue consists of a variety of specialised, water-conducting cells known as tracheary elements. together with pholem [tissue that contains sugar from the leaves to the rest of the plant] , Xylem is found in all vascular plants, including the seedless club Moses, ferns, horsetails, as well as all angiosperms (flowering plants) and gymnosperms (plants with seeds un enclosed in an ovary).
The xylem treachery elements consists of cells known as tracheids and vessel members, both of which are typically narrow, hollow, and elongated. Tracheids are less specialised then the vessel members and are the only type of water -conducting cells in most Gymnosperms and seedless vascular plants. water moving from tracheid to tracheid must pass through a thin modified primary cell wall known as the pit membrane, which serves to prevent the passage of damaging air bubbles. Vessel members are the principle water - conducting cells in angiosperms (though most spices also have tracheids) and are characterized by areas that lack both primary and secondary cell walls, known as perforations. water flows relatively unimpeded from vessel to vessel through these perforations, through fracture and descriptions from made bubbles are also more likely. In addition to the tracheary elements, xylem tissue also features fibre cells for support and parenchyma (thin walled and specialised the cells) for the storage of various substances.
xylem formation begins when they actively divided cells of growing root and shoot tips(apical meristems) give rise to primary xylem. in Woody plants, secondary xylem mature stem or root and it is formed as the plant expands in grith and builts a ring of New xylems around the original primary xylem tissues. when this happens, the primary xylem cells die and lose their conducting function, forming hard skeleton that serves only to support the plant Thus in the trunk and older branches of a tree ,only the outer secondary xylem (sapwood) serves in water conduction, while the inner part (heartwood) is composed of Dead but structurally strong primary xylem. in temperate or cold climates, the age of a tree may be determined by counting the number of annual xylem rings formed at the base of the trunk (cut in cross section).