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science notecards

CH.3 L5

QuestionAnswer
tropism plants growth response toward or away from a stimulus
hormone affects how the plant grows and develops
photoperiodism a plants response to seasonal changes
critical night length is the numbers of hours that darkness that determines whether a plant will flower
dormancy a period were the organism's growth stops
what are the3 stimuli that produce plant responses touch, gravity, light
what is a example of a positive and negative tropism if plant grows toward the stimulus its positive if it grows away from stimulus its negative
what triggers a plant to flower they respond to the changing of the seasons
Created by: user-1915030
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