9 The sten holds the plants
its branches
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Collenchyma cells are elongated cells with unevenly-thickened walls. They provide structural support, mainly to the stem and leaves. ... Sclerenchyma cells also provide support to the plant, but unlike collenchyma cells, many of them are dead at maturity.
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Stems are characterized by the presence of nodes (the points of attachment for leaves or branches) and internodes (regions between nodes). Plant organs are made up of simple and complex tissues. The stem has three tissue systems: dermal, vascular, and ground tissue. Dermal tissue is the outer covering of the plant.
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