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Department
Biology
Course
Biology 2217B
Professor
Richard Gardiner
Semester
Fall

Description
httpwwwlifeumdeduclassroombsci124mainhtml this site has basically all the same notes as our class and more check it out for lab and examsLab 1Wood Formation and Structure1Periderm and LenticelsPeriderm as the woody stem increases in girth the epidermis splits and becomes replaced by 3layered PERIDERM consisting ofaCork cells phellembPhellogen meristemc PhellodermThe cork cells are very regular rectangular cells with no intercellular spaces The cell walls have a layer waterproof suberin on themLenticelOccasionally the phellogen will produce lensshaped LENTICELS instead of cork cells The loosely packed COMPLEMENTARY cells are unsuberised and allow for gas exchange through the barkBARKeverything EXTERNAL to the vascular cambiumPERIDERMCORTEXPHLOEM
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