BIOL 1001 Lecture 5: Section 5: Plant Transport
3 Apr 2016
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Wed 4 feb, in-class, closed book, sign out sheet at end, sections 1-6 (plants) multiple choice, Pencil, 50 questions worth 1 point each, figures, Root system absorbs water and dissolved minerals from the soil. Shoot system takes up carbon dioxide from atmosphere. Photosynthetic cells use these materials to produce sugar for overall plant growth and reproduction nonphotosynthetic plant cells (such as roots, flowers) depend on this organic food. Phloem transports organic substances in a watery sap. Figure 36. 1 overview of material uptake and long-distance transport processes in plants. Three forms of short distance transport within and among nearby tissues: transmembrane transport, symplastic transport, apoplastic transport. Figure 36. 6 three routes of tissue-level transport in plants: (a) transmembrane, (b) symplastic, and (c) apoplastic. Export of a material from one cell (via membrane proteins) into the intercellular space, followed by import of the same substance by adjacent cell. Example: auxin travels down from shoots to roots.
