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13 Cards in this Set
- Front
- Back
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What is the name of the hormone that controls plant growth? |
Auxin |
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Where in the plant are these hormones found? |
Tips |
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What is the effect of these hormones in each area of the plant? |
Shoots go towards light. Roots go away |
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What is phototropism? |
Towards/Away the light |
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What is the difference between positive/negative phototropism? |
Pos = Towards. Neg = Away |
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What is geotropism? |
Towards/Away the ground |
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What is the difference between positive/negative geotropism? |
Pos = Towards. Neg = Away |
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Describe how hormones make plants grow towards the light |
Auxin goes to the opposite side of the plant to the light and increases growth |
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Describe the process that makes roots grow downwards |
Auxin in the roots goes on the lower side and inhibits growth so the root bends downwards |
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Why is it important for plants to grow towards the light? |
Plants need light to carry out photosynthesis |
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Why is it important for roots to grow downwards? |
So that the plant has more stability, water and minerals |
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Why won't a plant shoot grow if it's tip is cut off? |
Because no auxin is being made |
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Describe 4 uses of plant hormones |
Selective Weed Killers Growing from Cuttings with Rooting Powder Controlling the Ripening of Fruit Controlling Dormancy |
