when a plant responds to light by growing in a particular direction
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what is geotropism?
when a plant responds to gravity by growing in a particular direction
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what are auxins?
a group of hormones that promote growth/ cell division (control the plants response to stimuli)
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where are auxins found?
in the tip of stems or the tip of roots
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describe the process of auxin in the stem of a plant responding to light?
-more light on one side of stem
-auxin concentrates on the darker side of stem
-cells on the darker side grow faster
-causes the shoot to grow towards the light (bend)
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what is a positive and negative tropism?
positive- growing towards the stimuli (light, gravity, etc.)
negative- growing away from the stimuli
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what is the difference between auxin in the stem and auxin in the root of a plant?
stem- promote growth
root- inhibit growth
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what are gibberelins?
plant hormone that is important in initiating seed germination
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what is ethene?
plant hormone that controls cell division and the ripening of fruit
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what can auxins be used for other than in plants?
as weed killer (makes weeds grow so fast that they use up their food reserves and die)
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what can ethene be used for other than in plants?
used in the food industry to control ripening of food during the storage and transportation process
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what can gibberelins be used for other than in plants?
-promote flowering when in high demand (mother's day, valentines)
-in agriculture to produce larger crops
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Other cards in this set
Card 2
Front
what is geotropism?
Back
when a plant responds to gravity by growing in a particular direction
Card 3
Front
what are auxins?
Back
Card 4
Front
where are auxins found?
Back
Card 5
Front
describe the process of auxin in the stem of a plant responding to light?
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