Plants Flashcards
Effect of Cytokins
Promote cell division
Delay leaf abscission
Overcome apical dominance
Effect of ABA
Inhibits seed germination and growth
Causes stomata closure under water stress
Effect of Auxins
Promote cell elongation
Inhibit growth of side-shoots
Inhibits leaf abscission
Gibberellins
Promote seed germination
Growth of stem
Ethene
Promote fruit ripening
Tropisms
Growth response towards or away from stimulus
Chemotropism
Thigmotropism
Trophic
How living things feeed
What shifts auxins to dark side
PIN proteins controlled by PINOID
Concentration of auxins on parts of plant
Roots respond to lower concentrations of auxins, but not high
While shoots respond to high concentration but no response at lower concentrations
Commercial use of auxins
Rooting powder
Seedless fruit
Herbicide
Commercial use of cytokinins
Mass produce plants in tissue culture
Promote bid and shoot growth
Prevent yellowing of lettuce leaves
Commercial use of gibberellins
Extend time fruit can remained unpicked
+ cytokinins elongate apples
Grow bigger grapes
Higher sugar cane production
Commercial use ethene
Speed up fruit ripening
Promote fruit drop
