1. 
   Phototaxy
   • (n.) The influence of light on the movements of low organisms, as various infusorians, the zoospores of certain algae, etc.; also, the tendency to follow definite directions of motion or assume definite positions under such influence. If the migration is toward the source of light, it is term...
   Found op http://thinkexist.com/dictionary/meaning/phototaxy/
   
   
2. 
   phototaxy
   phototaxis, phototaxy 1. The movement of an organism in response to color or light pattern stimulus. 2. Taxis of an organism elicited in response to the source of a light stimulus. 3. In botany, the movement of a part of a plant toward or away from light sources.
   Found op http://www.wordinfo.info/words/index/info/view_unit/2093/7
   
   

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