Xylem cells join end to end to form a pipeline.
End walls between cells degenerate
|Phloem cells however have perforated end walls.|
|Xylem cells are dead cells with no nucleus.||Phloem cells are living with no nucleus.|
|Cell wall has cellulose and strong lignin||Cell wall has cellulose|
|Transports water and ions from roots to leaves.||Transports food(sucrose) from source(site of production) to sink(site of use).|