Three Meristem Locations: Apical, Lateral, Intercalary
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Apical meristems at stem and root tips extend a plant's length; lateral meristems thicken it; intercalary meristems, found only in monocots, elongate leaf bases.
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Intercalary meristem at the blade's base lets a mowed grass leaf regrow from below even after its tip is cut off.
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Only monocots carry intercalary meristem — a mowed dicot leaf cannot regrow the same way.