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8.5

TermDefinition
tropism a plants growth and response
hormone a chemical that affects the plants growth and develop
auxin an important plant horomone
photoperiodism seasonal changes in length of night and day
short-day plant theses plants flower when nights are longer
long-day plant theses plants flower when nights are shorter
critical night length number of hours of darkness
day-neutral plant this flowering cycle is not as sensitive
dormancy a period where of a plants growth stops
annual yearly
biennial two year cycle
perennial more than two years
Created by: s732094
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