Plants!

  • Created by: AOconnor
  • Created on: 12-05-18 13:15
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  • Plants
    • Disease
      • Detection
        • Stunted growth
        • Spots and discolouration
        • Decay
        • Growths
        • Malformed stems/leaves
        • Pests
      • Identification
        • Refer to manual/website
        • Take infected plants to lab
        • Use testing kits using monoclonal antibodies
      • TMV and Rose Black Spot
      • Nitrate deficiency causes stunted growth (nitrate ions needed for protein synthesis)
      • Magnesium deficiency caused chlorosis (magnesium needed for chlorophyll)
      • Defence
        • Physical defence
          • Cellulose cell walls
          • Tough waxy cuticle
          • Layers of dead cells around stem (bark)
        • Chemical
          • Antibacterial chemicals
          • Poisons
        • Mechanical
          • Thorns and hairs
          • Mimicry
    • Photosynthesis
      • Uses for glucose
        • Respiration
        • Converted into insoluble starch (storage)
        • Produce fats and oils
        • Produce cellulose
        • Produce amino acids (protein synthesis)
      • Callum Watling Got Obese!
      • Factors
        • Light intensity
        • CO2
        • Temperature
          • If too hot, rate decreases due to enzymes becoming denatured
    • Structure
      • Leaf
        • waxy cuticle prevents avaporation
        • Spongy mesophyll has air spaces to allow easy diffusion of gases
        • Stomata allows gases to pass through
        • Guard cells control opening/closing stomata to prevent loss of water and wilting
        • Upper epidermis is transparent to allow light to pass through
      • Cell
        • Cell wall strengthens cell
        • Vacuole stores cell sap
        • Chloroplasts contain chlorophyll which absorbs sunlight
      • Root Hair
        • Large s.a for max intake of water and nitrates
        • Lots of mitochondria for energy (for active transport
        • large vacuole to keep cell shape
    • Movement
      • Water
        • Osmosis into roots from soil (high to low)
          • Up transpiration stream to leaf via xylem
            • Xylem is hollow tube of dead cells that carries water and minerals
      • Organic molecules (glucose and nutrients)
        • Active transport (requires energy) into roots from soil (low to high)
          • Translocation = movement of dissolved sugars around plant
            • Travels via phloem

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