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CH3 lesson5

TermDefinition
Tropism The response of a plant toward or away from a stimulus.
Hormone A chemical that affects growth and development.
Photoperiodism A plant's 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.
Dormancy A period organism's growth or activity stops.
List three stimuli that produce plant responses. Light, Gravity, and Touch.
Giving an example of both positive and negative tropism. Positive Tropism: Plants grow towards light sources to carry out photosynthesis. Negative Tropism: Plants grow away from light sources to avoid excessive sunlight and potential damage.
Why is Dormancy important. Dormancy is needed for survival, resource conservation, and successful reproduction in plants, seeds, and other organisms, allowing them to withstand bad environmental conditions.
Describe what triggers a plant to flower. Plants flower in response to a combination of environmental cues, internal hormonal signals, day length, and temperature.
Created by: user-1996715
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