FRST 200 Lecture Notes - Lecture 14: Endodermis, Taproot, Eudicots

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Germination in df and red alder is epigeous. Seedlings grow from tips of shoots and roots. Has 3 stages: mitosis new cells produced from meristematic cell, cell expansion, cell differentiation and maturation. Meristems = zones of undifferentiated, perpetually juvenile cells capable of mitosis. Apical merit stem - zones of active division at the tip of roots and shoots, make 3 primary meristems. Protoderm - make dermal tissues, skin tissues. Ground meristem - makes ground tissues, packing inside a stem. Transport photosynthate, hormones etc from shoot to root. Anchor and support the shoot: root trivia. Can go very deep in arid environment. Can be numerous with large collective length and surface area. Can grow from <<1 mm to <25 mm per day: anatomy. First root from embryo is radicle becomes primary root. Develops into the tap root in gymnosperms and eudicots. Produce cells in all directions (for cap and root) Behind optical meristem is zone of elongation.

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