Wednesday, August 20, 2014

Tropism

14. Tropism

 
 
 
The picture above shows a Petunia. The Petunia is an example of tropism. Tropism is shown when an organism responds or moves when encountering a stimuli. The Petunia above is moving towards the light in order to better perform photosynthesis. Other examples of this could be a moth going toward a light, rats going away from a light and a human covering it's ears during a loud sound. 

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