In a dicotyledonous stem, three main regions can be distinguished: the epidermis, the cortex, and the vascular region. The epidermis is the outer protective layer, while the cortex, located beneath it, consists of parenchyma cells that store food and provide support. The vascular region, which includes the xylem and phloem, is responsible for the transport of water, nutrients, and food throughout the plant. These regions work together to support the plant's growth and function.
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