Plant Hormones Only B3.3.7 Flashcards
What are examples of plant hormones?
Examples of plant hormones include auxins, ethene, and gibberellins.
What is the role of auxins in plants?
Auxins stimulate growth by causing cell elongation and help regulate fruit development.
What is the role of ethene in plants?
Ethene causes plant fruits to ripen by stimulating the conversion of starch into sugar.
What is the role of gibberellins in plants?
Gibberellins promote growth, particularly stem elongation, and can end the dormancy period of seeds and buds.
How do plant hormones have commercial uses?
Plant hormones are used commercially to speed up or slow down plant growth, helping farmers and growers increase yield.
How do auxins function in weed killers?
Many weed killers contain auxins that cause broad-leaved weeds to grow too fast, leading to their death.
What is rooting powder and its use?
Rooting powder contains auxin and is used to produce identical plants from cuttings by promoting root growth.
How is auxin used to delay ripening of fruit?
Auxin is sprayed on fruit trees to delay ripening, allowing for a simultaneous harvest.
What effect does spraying auxin on unripe fruits have?
Spraying auxin on unripe fruits prevents them from ripening during transport.
How does ethene affect fruit ripening?
Ethene is sprayed on fruit trees to accelerate the ripening of fruits, making them ready earlier in the season.
How can auxins be used to produce seedless fruits?
Auxins can be applied to unpollinated flowers to produce seedless fruits.
How do gibberellins help with seed dormancy?
Gibberellins can trigger seeds to germinate in winter, breaking their dormancy.
