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Chapter 3 lesson5

Chapter 3 lesson five plants

TermDefinition
Tropism The require of a plant towards or a wave from a stimulus
Hormone A chemical that affects gross and development
Photoperiodism A friend responds to seasonal changes in the length of day and night
Critical night length The number of hours of darkness that determines whether or not a plant will flower
Dormancy A period of time where a organism’s Activity stops
List three stimuli that produce plants responses Touch gravity and light
Give an example of both positive and negative tropism Sweet peas and grapes show positive gravitropism stems show a negative Gravitropism
Describe what triggers plant to flower the amount of darkness a plant receives determines the time of flowering in many plants
Why Dormancy is important Dormancy helps plant survive freezing temperatures and the lakes of liquid water
Created by: user-1996631
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