[PL SC221] - Final Exam Guide - Everything you need to know! (78 pages long)

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Meristem: refers to a tissue that contains actively dividing cells (most not meristematic) Plants have 4 types of meristems that can be identified throughout the length of the plant body: apical meristems (tips, axillary buds or meristems (tips, lateral meristems give them girth (secondary) increase in diameter and. Intercalary meristems growth, not at the tip (intercalate between more differentiated cells) only occur in monocots. The whole picture is apical meristem but 3 primary meristems within. Parenchyma cells - thin-walled, can do anything ( handy dandy ), can re-differentiate into a different type of cell. Collenchyma cells dark stains, thick cell walls, alive at maturity. Sclerenchyma cells cell wall thicker (structure, rigidity) than collenchyma cells, dead at maturity, just need for strength. Procambium: cells that will differentiate and produce vascular tissue. Xylem water, cells dead at maturity, absorbed from root. First 3) absolutely necessary for survival: is species specific (evolution) storage capacity.

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