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Lecture 12

Cork highly suberized inner cell wall the cell

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Unformatted text preview: side, phelloderm cells to inside. Cork – highly suberized inner cell wall, the cell becomes dehydrated as matures, dead at functional maturity. Phelloderm – parenchyma cells, living at maturity (often only one cell thick) - Formation of periderm leads to sloughing off of cortex and epidermis (Fig. 24-16c). - Unlike vascular cambium, cork cambium has a lifespan (often one year). This means that new cells must become meristematic. What happens when you use up all of the pericycle cells? Think about it now….we will talk about it when we discuss secondary growth in the stem. Self Test: First, label the top illustration of a cross-section through a primary root then explain what occurs between each figure....
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