Submitted by Tyler Yates In lab we examined various roots from two different dicot plant specimens. Pisum Sitivum (pea), and Vicia faba(bean). Cross sections were prepared and examined under a compound microscope. The picture below on the right is a cross section of Pisum Sativum and an annotated image to the left identifies the structural internal components. Notice the external root hairs stained dark blue surrounding the epidermis. internal to the epidermis is the cortex made up of the larger clear parenchyma cells of the ground tissue. The group of cells in the middle is the stele, or procambium. The procambium includes the vascular tissues as well as the pericycle; surrounded by the endodermis. The pericycle, in dicot roots, gives rise to lateral roots, cork cambium, and portions of vascular cambium. Notice that the pith is absent in dicot roots .
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AuthorContent is created by students participating in the Plant Structure course at Oregon State University for Winter 2017. Archives
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