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Ch3 l5

QuestionAnswer
Tropism A plants growth response toward or away from a stimulus
Hormone A chemical produced by a plant that affects how the plant grows and develops
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 wether or not a plant with flower
Dormancy A period when an organisms growth or activity stops
What are the three stimuli that produce plant responses Touch, gravity, and light
What is an example of positive and negative tropism Negative tropism is when the plant grows away from the stimulus Positive tropism is when the plant grows toward the stimulus
What triggers a plant to flower The amount of darkness the plant receives
Created by: user-1915589
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