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phototaxis

n. movement toward or away from a light source. Positive phototaxis is movement toward light; negative phototaxis is movement away from light. Some insects display a relationship between muscular activity and light orientation. When the left eye of a fly or bee is shaded or blinded, the legs on the left side of the body work to keep the body turned toward the light that can be seen only with the right eye. See also taxis.

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