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Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
tropism   a plants growth response toward or away from stimulus  
🗑
hormone   a chemical that effects how the plant grows and develops  
🗑
auxin   it speeds up the rate at which the plant cells grow.  
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photoperiodism   a plants respond to seasonal changes in lenght of night and day.  
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short-day plants   when nights are longer  
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long-day plants   when nights are shorter than a critical lengh.  
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critical night lenght   the number of hours of darkness that determins whether or not a plant will flower.  
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day-neutral   dandelions, rice, tomatoes, etc.  
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dormancy   a period when an organism growth or activity stops.  
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annual   flowering plants that complete a life-cycle within a one growing season.  
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biennials   angiosperms that complete their life cycle in two years.  
🗑
perennials   flowering plants that live more than 2 years  
🗑
tropism   a plants growth response toward or away from stimulus  
🗑
hormone   a chemical that effects how the plant grows and develops  
🗑
auxin   it speeds up the rate at which the plant cells grow.  
🗑
photoperiodism   a plants respond to seasonal changes in lenght of night and day.  
🗑
short-day plants   when nights are longer  
🗑
long-day plants   when nights are shorter than a critical lengh.  
🗑
critical night lenght   the number of hours of darkness that determins whether or not a plant will flower.  
🗑
day-neutral   dandelions, rice, tomatoes, etc.  
🗑
dormancy   a period when an organism growth or activity stops.  
🗑
annual   flowering plants that complete a life-cycle within a one growing season.  
🗑
biennials   angiosperms that complete their life cycle in two years.  
🗑
perennials   flowering plants that live more than 2 years  
🗑


   

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