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Plant Responses and
Term | Definition |
---|---|
Tropism | The response of a plant toward or away from a stimulus. |
Hormone | Chemical that affects growth and development. |
Auxin | A plant hormone that speeds up the rate at which a plants cells grow controls a plants response to light |
Dormancy | A period of time when an organisms growth or activity stops. |
Critical night length | The number of hours of darkness that determines whether or not a plant will flower. |
Long-day plant | A plant that flowers when the nights are shorter than the plants critical night length. |
Photoperiodism | A plants response to seasonal changes in the length of night and day. |
day-neutral plant | A plant with a flwering cycle that is not sensitive to periods of light and dark. |
Short-day plant | A plant that flowers when the nights are longer than the plants critical night length |