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Ch.3 L5

Plant responses and growth

TermDefinition
Tropism The response of a plant toward or away from a stimulus
Hormone A chemical that effects 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 wetherod not a plant will flower
Dormancy A period of time when a organisms growth of activity stops
What are 3 stimuli that produce plant responses Touch, gravity, and light
What is a example of a positive and negative tropism If a plant grows towards the stimulus it is a positive tropism , if It grows away from the stimulus it is negative
What triggers a plant to flower The amount of darkness a plant receives determines the time of flowering in many plants
Created by: user-1915471
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