Plant Hormones and Growth
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Questions and Answers

What is the main hormone responsible for plant growth?

  • Auxins (correct)
  • Gibberellins
  • Cytokinins
  • Abscisic acid

    • How does the presence of auxins affect the growth of stems?

  • Auxins cause the stem to bend away from the light
  • Auxins cause the stem to grow faster on the side facing the sunlight
  • Auxins cause the stem to grow faster on the side in the shade
  • Auxins cause the stem to bend towards the light (correct)

    • How does the presence of auxins affect the growth of roots?

  • Auxins cause the root to bend downwards (correct)
  • Auxins cause the root to grow faster on the lower side
  • Auxins cause the root to grow faster on the upper side
  • Auxins cause the root to bend upwards

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