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Chapter 3 lesson 5

chapter 3 lesson 5 plants

TermDefinition
Tropism The response of a plant toward or away from a stimulus
Hormone A chemical that affects growth and development. 2 the chemical product of an endocrine gland.
Photosynthesis The prosses by with plant and other autotrophs capture and use light energy to make food for carbon dioxide and water
Critical night length The number of Horus of darkness that determines weather or not a plant will flower
Dormancy A period of time when an organism’s growth or activity stops
List three stimuli that produce plant responses Touch, gravity ,and light
Give an example of both positive and negative tropism - you may draw too An example of positive tropism is growing towards the light. Negative, tropism is stems grow upwards against gravity
Describe what triggers a plant to flower Photoperiodism triggers a plant to flower
Why dormancy is important Dormancy os important because it helps plant survive freezing temperatures and the lack of liquid water
Created by: user-1996632
 



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