BILD 2 Lecture Notes - Lecture 12: Auxin, Guard Cell, Cell Potency
17 Mar 2018
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Document Summary
Plant structure, functions of shoot system, to reach light, photosynthesis, transpiration, gas exchange, apex: an auxin source (where it is synthesized) later transported to shaded side of plant, functions of root system, nutrient uptake, h2o uptake, anchoring. Stoma with 2 guard cells: vasculature, unique features of a plant cell, vacuole (storage) Storage organelle (where waste/toxins can be stored and removed from cytoplasm: cell expansion listen, waste products. Lysosome (defense: cell wall (made of cellulose) Like connective tissue: cell shape, rigid support, defense, totipotency, regeneration of whole plant from a cell, plant cells are connected by little tunnels called plasmodesmata, plant transport. Functions: nutrient uptake from soil, water transport, metabolite transport (sugar, starch, organic compounds) Levels of transport: uptake of minerals & water by a cell, transport from cell to cell, whole plant transport (xylem, phloem, xylem: passive straw, phloem: transport nutrients from source to sink (active, xylem transport, root pressure theory.
