Spec 8461
Revise AQA GCSE Biology 5.4.2 Use of plant hormones (HT only) with the question bank, lessons, revision guides, and flashcards.
Students should be able to describe the effects of some plant hormones and the different ways people use them to control plant growth. • Plant growth hormones are used in agriculture and horticulture. • Auxins are used: as weed killers; as rooting powders; for promoting growth in tissue culture. • Ethene is used in the food industry to control ripening of fruit during storage and transport. • Gibberellins can be used to: end seed dormancy; promote flowering; increase fruit size.
