What you’ll learn8 learning objectivesChoose one objective for a focused lesson, or study the complete topic.7.2.1Solutes transported in water• Mineral ions and organic compounds transported dissolved in waterSyllabus objective7.2.2Water transport from soil to xylem• Water transport from soil to xylem:- Apoplast pathway: reference to lignin and cellulose- Symplast pathway: endodermis, Casparian strip, suberinSyllabus objective7.2.3Transpiration from leaves• Transpiration: evaporation from leaf internal surfaces, diffusion to atmosphereSyllabus objective7.2.4Hydrogen bonding in water movement• Hydrogen bonding in water movement:- Cohesion-tension in transpiration pull- Adhesion to cellulose in cell wallsSyllabus objective7.2.5Xerophytic adaptations• Xerophytic plant adaptations to reduce water lossSyllabus objective7.2.6Assimilate transport in phloem• Assimilate transport: sucrose and amino acids from sources to sinks in phloemSyllabus objective7.2.7Companion cells transfer assimilates• Companion cells transfer assimilates: proton pumps, cotransporter proteinsSyllabus objective7.2.8Mass flow in phloem• Mass flow in phloem: hydrostatic pressure gradient from source to sinkSyllabus objective