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In an experiment to investigate the effect of temperature on seed germination, soaked maize seeds were subjected to varying temperatures as tabulated below. 3.

Temperature (°C)061217283341.551
Percentage germination (%)002.551344263


 

  1. Account for the percentage germination at:
    • 6°C; 
    • 33°C. 
  2. State two internal factors that affect seed germination

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  1.   
    • No germination due to low temperature, inactivating enzymes
    • Percentage germination highest as temp was most favourable/ enzymes worked their best? optimum
       
  2. Embryo
    Seed coat
    Growth hormones
    Enzymes
    Inhibitors
    Viability
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