AP BIOLOGY

Detailed explanation-1: -Xylem tissue comprises a network of dead, hollow elongated conduits such as tracheids or vessels, which may be contact with living phloem or parenchyma tissue.

Detailed explanation-2: -Xylem is a tissue consisting of dead, hollowed-out cells that form a system of pipes. The walls of xylem cells are lignified (strengthened with a substance called lignin ).

Detailed explanation-3: -Xylem vessels always push water upwards and nutrients towards roots. Tracheids are dead tubular cells with tapering ends, vessels with thin elongated structures that have a tubular appearance, and no cytoplasm.

Detailed explanation-4: -It consists of vessels, tracheids, xylem fibres and xylem parenchyma. Except for xylem parenchyma, all other components of xylem tissue are dead. Xylem parenchyma contains parenchymatous cells having a fully functional nucleus and are capable of performing various life processes.