0 the type of plant tissue that carries water and minerals from the roots to the leaves and gives support to the stem or trunk --
1 the plant tissue that carries water from the roots to the leaves and gives strength to the stem or trunk --
Trends in wood density and structure are linked to prevention of xylem implosion by negative pressure.
In particular, spittlebugs should be susceptible to manipulation of xylem transport solutes.
Stomatal sensitivity to abscisic acid imported from the xylem sap.
Vascular bundles show a large number of xylem vessels of different diameter.
The second xylem element is of the dense, helicoidal type, which occurs in bundles comprised of numerous individuals, and remains active until maturity.
In transverse section, primary xylem strands rarely exceed 300 m in their smallest dimension and 2.5 mm in the largest.
As the tissues dehydrate, leaves shrink, chlorophyll is degraded, sucrose accumulates, the xylem cavitates eventually and the plants become desiccated.
Features of the secondary xylem in radial section are not easily observed due to mineralization of the cell walls.
