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Factors that Affect Plant Growth

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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Factors that Affect Plant Growth

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  1. Factors that Affect Plant Growth Internal Factors

  2. 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?

  3. Plant Hormones • Auxins • Cytokinins • Gibberellins • Abscisic Acid (ABA) • Ethene

  4. Auxins Phototropism

  5. Cytokinins

  6. Gibberellins • Similar to auxins, but the mechanisms of action are not fully understood by researchers!

  7. Abscisic Acid (ABA)

  8. Ethene (Ethylene) • Effect of ethylene gas on fruit ripening • Tomato ripening experiment

  9. Review: Internal Factors • Auxins • Cytokinins • Gibberellins • Abscisic Acid (ABA) • Ethene

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