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PlantResponsesGrowth

TermDefinition
Tropism The response of a plant toward or away from a stimulus
Hormone A chemical that effects growth and development, the chemical product of an endocrine gland
Auxin A plant hormone that speeds up the rate at which a plant’s cells grow and controls a plants response to light.
Photoperiodism A plants response to seasonal changes in the length of night and day.
Critical night length The number of hours of darkness that determines whether or not a plant will flower.
Short day plant A plant that flowers when the nights are longer than the plants critical night length.
Day neutral plant A plant with flowering cycle that is non sensitive to periods of light and dark.
Dormancy A period of time when an organisms growth or activity stops.
Long day plant A plant that flowers when the nights are shorter than the plants critical night length
Tell me 3 stimuli that produce plant responses Light, gravity, and touch
Give an example of a positive and negative tropism An example for positive tropism is a stem growing towards the sunlight, negative is not growing towards sunlight
Tell me what triggers a plant to flower Sexual reproduction
Created by: Luke spivey
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