use of plant hormones

• Plant hormones


  Chemicals that regulate the growth and development of plants
• Auxins


  • Used as weed killers
  • Used as rooting powders
  • Used for promoting growth in tissue culture
• Gibberellins


  • Used to end seed dormancy
  • Used to encourage plants to flower
  • Used to make food grow larger
• Ethylene


  Used in the food industry to trigger the ripening of fruits like bananas before they are sold
• This video is for triple biology higher-tier students only
• Organs involved in phototropism and gravitropism use gibberellins
• Gibberellins are important in initiating seed germination
• Ethylene controls cell division and the ripening of food
• You can find plenty of questions on the uses of plant hormones in the revision workbook