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Ch 3 Lesson 5 defin

ch3 lesson5 def

TermDefinition
Tropism the response of a plant toward or away from a stimulus
Hormone a chemical that affects growth and development
Photoperiodism a plants response to seasonal changes in the length of night and day
critical night length the number of hours of darkness that determines whether or not a plant will flower
dormancy a period of time when an organism's growth or activity stops
Created by: Trenton Hensley
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