M:6 S:5 Plant Cloning

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  • Plant Cloning
    • Natural
      • Vegetative Propagation
        • Production of clones from non-reproductive tissue
        • Methods
          • 3. Suckers
            • Shoots grow from sucker buds on roots of parent plant
              • Elm Trees
          • 2. Runners
            • New shoots also from end of runner
            • Same as 1. But grow above ground
            • Strawberries
          • 4. Tubers
            • Underground plant structures
            • Act like food storage
            • Covered in 'eye' that sprout to form new plants
              • Potatoes
          • 5. Bulbs
            • New bulbs form from original
            • Onions
          • 1. Rhizomes
            • Stem structures
            • Grow horizontally underground
              • Bamboo
    • Artificial
      • Tissue Culture
        • Against tissue culture
          • 2. Undesirable genetic characteristic passed on
          • 4. No genetic variation
          • 1. Production costs are high
          • 3. Contamination by microorganisms can be disastrous
        • Method
          • 1. Cells are taken from the stem or root
          • 3. Placed on culture medium
          • 4. When cells have divided and grown into a small plant, it is replanted in soil
          • 2. Sterilised
            • Kills any micro organisms that may compete
            • Decreases growth rate
        • For tissue culture
          • 3. Less space requires
          • 2. Any season
          • 4. Produces lots of plants quickly
          • 1. Desirable genetic characteristic are passed on
    • QUESTIONS
      • 1. What is vegetative propagation?
      • 2. A scientist wants to produce a whole plant from a genetically engineered plant stem cell
        • Describe how she could achieve this

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