Concept:Xylem is a complex plant vascular tissue made up of specialised conducting cells.
Explanation:Xylem mainly transports water and dissolved minerals from roots to other parts of the plant.
Its components include tracheids, vessel elements, xylem parenchyma, and xylem fibres.
Tracheids are elongated, dead cells with lignified walls and tapered ends that overlap with adjacent cells.
They are non-protoplasmic because they lack living contents at maturity.
Companion cells and sieve tubes are part of phloem tissue, not xylem.
Epidermal tissue covers the plant surface and is not part of vascular tissue.
Answer:B. tracheid
