BIOA02H3 Lecture Notes - Amorphophallus, Cladocera, Lightning

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3 Feb 2013
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BIOA02H3 Full Course Notes
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Freom tree to seed: transport in plants, plant nutrition and soils, plant defense, plant life on the edge. Lecture 6 notes (from seed to tree: from primary to secondary plant body, shoot and root primary growth. Primary meristem: shoot apical meristem & root apical meristem. Shoot apical meristem tissue from xylem (inside) to epidermis (outside): xylem> vascular cambium> phloem>collenchyma>cortex (made up of parenchyma)>epidermis: e. g sunflower (helianthus) o. From pith(inside) to epidermis: pith>primary xylem>vascular cambium>primary phloem>collenchyma>cortex(parenchyma with some collenchyma)>ground meristem>procambium>protoderm>epidermis. Root apical meristem tissue: x-section of shoot is circle and vascular bundles around, during mitotic cell division: procambium>ground meristem>root apical meristem>root, during differentiation: primary xylem>vascular cambium(replace procambium)>primary cap>protoderm phloem>endoderm>periccle>cortex>epidermis with root hair. Main difference between root and shoot: root has no pith and the vascular cambium is at the centre. Endoderm acts as a filter for material from root hair to vascular tissue: x-section of root is circle a star shaped.

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