The influence of light on the movements of low organisms, as various infusorians, the zoöspores of certain algæ, 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 termed positive phototaxis; if away from the light, negative phototaxis.
Phototaxis Movement of bacteria (especially photosynthetic bacteria) toward light
attraction and movement of an organism towards light.
The ability of bacteria to detect changes in light intensity and respond by moving away from or toward the light.
The way a creature is stimulated by light. Demonstration.
The movement of a motile organism in response to stimulation by a light source. It is called negative phototaxis when it moves away from and positive phototaxis when it moves toward the source.
The movement of a body toward or away from a light source.
The ability to move toward or away from light.
Phototaxis is the movement of an organism toward or away from light. Moths exhibit phototaxy; they are attracted to light. Males moths are more strongly attracted to light than females.
(adj. phototactic)- movement response of an animal to light eg. negatively phototactic refers to movement away from light.
Phototaxis is a kind of taxis which occurs when a whole organism moves in response to the stimulus light. This is advantageous for phototrophic organisms as they can orient themselves most efficiently to receive light for photosynthesis. Phototaxis is called positive, if the movement is in the direction of light and negative, if the direction is opposite.
