cell structure of xylem
Answer (1)
The cell structure of xylem consists of four main types of cells, each with specific roles:1. TracheidsElongated, tapered cells with thick, lignified wallsDead at maturitHave pits for water movement between cellsProvide water conduction and mechanical support2. Vessels (Vessel Elements)Shorter, wider tube-like cells arranged end to end forming continuous vesselsDead at maturity with thick lignified wallsHave perforation plates (no end walls) allowing efficient water flowMain water-conducting cells in angiosperms3. Xylem ParenchymaLiving cells with thin, cellulosic wallsStore food and help in lateral transport of water and nutrientsHave large vacuoles and prominent nucleiCan form tyloses that block vessels when needed4. Xylem Fibres (Sclerenchyma Cells)Long, thick-walled, lignified cellsProvide mechanical support and strength to the plant
