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Chapter3

Lesson 5

TermDefinition
Tropism Responsible plant towards or away from stimulus
Hormone a chemical that affects how the plant grows
Critical nightly length the amount of hours of darkness that determines if a plant will flower or not
Dormancy the period when a organism stops growth or activity
Three stimuli that produce plant responses touch gravity and light
Positive and negative tropism if a plant grows toward the sun it is positive and vice versa
What triggers a plant to flower the amount of dark a plant gets
why is dormancy important it helps the plant survive the cold and lack of water
photoperiodism the plants response to the change in the length of the night
Created by: user-1996504
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