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Bio CH21

Biology CH21 Plant Growth and Disease

TermDefinition
annual a plant that completes its life cycle within one year
biennial a plant that produces seeds at the end of the second year of growth and then dies
day-neutral plant plants in which flowering doesn’t depend on day length
fertilizer a substance made of minerals that improves soil for plant growth
gravitropism the response of a plant to gravity
long-day plant plants that flower when the day length rises above 12 to 14 hours
perennial a plant that doesn’t die at the end of one or two years of growth
phototropism the growth of a plant in response to light
short-day plant plants that flower when the day length falls below 12 to 14 hours
thigmotropism a plant growth response to contact
tropism a movement of a plant caused by a change in growth as a response to a stimulus
Created by: djhockett5
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