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Plant responses/grow

Chapter 3 lesson 5 notecards

TermDefinition
Tropism A plant’s growth response toward or away from a stimulus!
Hormone A chemical that affects how the plant grows and develops!
Photoperiodism A plant’s response to seasonal changes in the length of night or day!
Critical night length The number of hours of darkness that determines whether a plant will flower or not!
Dormancy A period when an organism’s growth or activity stops!
The 3 stimuli that produce plant responses Light, touch and gravity
Examples of positive and negative tropism Positive: the plant grows toward the stimulus Negative: a plant grows away from the stimulus
What triggers a plant to flower? The amount of darkness that the plant receives ( photoperiodism)
Created by: user-1915466
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