AQA GCSE Biology Unit 1 2.3 Plant control

HideShow resource information
View mindmap
  • Control in plants
    • Auxin- growth hormone
      • promotes growth in the shoot
      • Inhibits gowth in shoot
    • Phototropism
      • Light shines on shoot- more auxin accumulates on the shaded side- unequal distribution
        • greater auxin percentage on shaded side
          • Shaded side grows faster
            • Plant bends towards light
        • Auxin breaks down in light
    • Geotropism/ gravitropism
      • Gravity causes uneven distribution of auxin
        • Underside of the root grows slower than the upper side making the root pint forwards
    • Agriculture
      • Cutting is dipped in rooting powder then put into compost to produce identical plants


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all control in plants resources »