How is support achieved in woody plant?

How is support achieved in woody plant?

• In young woody plants, support is provided by the turgidity of the cells and the cellulose cell walls.
• In young woody plants, support is provided mainly by the lignified xylem vessels, tracheid and sclerenchyma tissue
• The walls of the xylem vessels and tracheid are thick and lignified. This hardens them, thus giving tensile strength and rigidity to the plant.
• The secondary thickening in the xylem cells deposit more wood to xylem or tissue to provide greater support in stems and roots.
• Support is enhanced by the central distribution of the xylem in the root. This helps to withstand the tugging strains of the aerial parts as they bend
• In the stem, xylem vessels exist as separate rod through the entire stem hence offering support against bending.
• Sclerenchyma tissue has thick and lignified cellulose cell walls which are impermeable to water, thus giving strength to the stem.

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