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Eleanor’s notecards
Chapter 3 lesson 5
| Question | Answer |
|---|---|
| Tropism | A plants growth response toward or away from a stimulus |
| Hormone | Is produced by a plant is a chemical that affects how the plants grow and develops |
| Photoperiodism | A plants response to seasonal changes and the length of night and day |
| Critical night length | Is the number of hours of darkness that determines whether or not a plant with flower |
| Dormancy | Is a period when an organisms growth or activity stops |
| List three stimuli that produce plant responses | Touch , gravity, and light that trigger growth response |
| Give an example of both positive and negative tropism | If a plant grows toward the stimulus, it is said to show a positive tropism. If a plant grows away from your stimulus, it shows a negative tropism. |
| Describe what triggers a plant to flower | Critical night length is the number of hours of darkness that determines whether or not a plant will flower |
| Why dormancy is a important | It is important because it helps. Plants survive freezing temperatures in the lack of liquid water. |
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