BIOS 240 Lecture Notes - Lecture 10: Osmoregulation, So Fresh, Sodium Chloride
17 Sep 2016
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Document Summary
Laterl transport of minerals and water in roots- Water potential was generatd-pulling from water evaporate in leaves, creating hydrostatic pressure. In the water films acidic to external part of cell walls, given to pull water from xylem. Then x pull water from roots, then troot from soil, then we saw that most of this transport of water flow extracellularly- Apoplox?-movement of water is majority of the water in the xylem is the only way in which water will move. Casparian strip=only barrier of apoplastic moements, at that point, water has to go inside cells go symplastic once at this level in the root, to prevnt water leaking out incoditions where setting is drier/more salty. Plants take advtg to get nurtrient-as water moves into root, brings things that are disulfinated-nutrients ex nitrate, sulfate. Brought in by various means of active transport or electrochemical grad"s gen"d by atpase or proton pump. Proton pump is analogus to sodium/k pump in animals.
