plant responses
| created: | 9 months ago by WDWgirl101 | tags: | ECSscience |
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Plant Responses |
changes resulting from internal & external stimuli |
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Stimulus |
something that causes a response |
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Tropism |
a response to a stimulus resulting in growth change |
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What kinds of tropism are there? |
positive (growing toward stimulus) & negative (growing away from stimulus) |
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Do plants grow toward a light source? |
some may |
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Do some plants grow around objects they touch? |
yes |
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Gravity growth |
positive response-roots growing downward:negative response-roots growing upward |
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Plant Hormones |
control growth changes triggered by tropisms |
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Ethylene |
gas produced by many plants & released into the air |
