Tropisms

Definition (http://en.wikipedia.org/wiki/Tropism)

A tropism is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus. In tropisms, this response is dependent on the direction of the stimulus (as opposed to nastic movements which are non-directional responses). (Wikipedia)

Preferred Units: N/A

Scope Note:
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This term is used for the following terms: 
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Approved Date
07-Jun-2013

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