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Factors that Affect Plant Growth. Internal Factors. Internal Factors. Influence growth Are found within the organism Remember? Human growth can be affected by internal factors like human growth hormone. What is an internal factor that you think might affect plant growth?. Plant Hormones.

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Presentation Transcript
internal factors
Internal Factors
  • Influence growth
  • Are found within the organism

Remember?

  • Human growth can be affected by internal factors like human growth hormone.
  • What is an internal factor that you think might affect plant growth?
plant hormones
Plant Hormones
  • Auxins
  • Cytokinins
  • Gibberellins
  • Abscisic Acid (ABA)
  • Ethene
auxins
Auxins

Phototropism

gibberellins
Gibberellins
  • Similar to auxins, but the mechanisms of action are not fully understood by researchers!
ethene ethylene
Ethene (Ethylene)
  • Effect of ethylene gas on fruit ripening
  • Tomato ripening experiment
review internal factors
Review: Internal Factors
  • Auxins
  • Cytokinins
  • Gibberellins
  • Abscisic Acid (ABA)
  • Ethene