Plant Hormones - Uses of Auxin, Gibberellin and Ethene #53

• What are the three plant hormones discussed in the video?

  Auxin, gibberellin, and ethylene
• What is the primary function of auxin in plants?

  It stimulates plant growth
• How can auxin be used in tissue culture?

  By adding auxin to stimulate growth
• What happens when cuttings are treated with auxin powder?

  They produce roots and grow into new plants
• How does auxin function as a weed killer?

  It disrupts growth patterns in plants
• Why are selective weed killers effective?

  They target broad-leaved plants only
• What are the three main uses of gibberellin?

  Controlling dormancy, inducing flowering, growing larger fruit
• What is dormancy in seeds?

  It is the period before growth starts
• How can farmers use gibberellin to increase crop yield?

  By inducing germination at optimal times
• How does gibberellin affect flowering in plants?

  It can induce flowering on demand
• What is the effect of gibberellin on seedless fruit?

  It helps them grow larger fruits
• What is the role of ethylene in fruit ripening?

  It stimulates the ripening process
• Why is controlling fruit ripening important for transportation?

  It allows fruits to be transported longer
• How do farmers use ethylene during fruit transport?

  They expose fruits to ethylene to ripen
• How does ethylene work at the cellular level?

  It stimulates an enzyme for ripening
• What are the commercial uses of auxin, gibberellin, and ethylene?

  • Auxin:
  • Stimulates growth
  • Used in tissue culture
  • Kills broad-leaved weeds
  • Gibberellin:
  • Controls dormancy
  • Induces flowering
  • Grows larger fruits
  • Ethylene:
  • Stimulates fruit ripening
  • Controls ripening during transport