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plant Responses
| Question | Answer |
|---|---|
| Tropism | the turning of all or part of an organism |
| Hormone | is a chemical that affects how the plant grows and develops |
| auxin | speeds up the rate at which a plant cells grows and controls a plant response to light |
| photoperiodism | the response of an organism to seasonal changes in day length. |
| critical night length | is the number of hour of darkness that determines weather or not a plant will flower |
| short-day plants | A plant that requires a long period of darkness, is termed a "short day" |
| long -day plant | when night are shooter than a critical length |
| Day-neutral plants | a flowering cycle that is not sensitive to periods of light and dark |
| dormancy | is a period when an organism's growth or activity stops |