Phototaxis — is a kind of taxis that 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 … Wikipedia
Phototaxis — Pho to*tax is, Phototaxy Pho to*tax y, n. [NL. phototaxis; photo + Gr. ? an arranging.] (Biol.) The influence of light on the movements of low organisms, as various infusorians, the zo[ o]spores of certain alg[ae], etc.; also, the tendency to… … The Collaborative International Dictionary of English
Phototaxis — Als Phototaxis wird eine durch Unterschiede der Beleuchtungsstärke (Beleuchtungsstärkengradient) in ihrer Richtung beeinflusste Fortbewegung von Organismen bezeichnet. Dabei unterscheidet man die positive Phototaxis (Bewegung in Richtung höherer… … Deutsch Wikipedia
phototaxis — Movement of a cell or organism towards (positive phototaxis) or away from (negative p.) a source of light … Dictionary of molecular biology
Phototaxis — Phototaxis, durch Lichtreize ausgelöste ⇒ Taxis vieler autotropher Algen und einiger heterotropher Einzeller. Die Bewegung ist häufig zum Licht hin gerichtet (positive P.), bei sehr hoher Lichtintensität bisweilen vom Licht weg (negativer P.).… … Deutsch wörterbuch der biologie
phototaxis — [fōt΄ō tak′sis] n. [ModL: see PHOTO & TAXIS] the positive, or negative, response of a freely moving organism toward, or away from, light phototactic [fōt΄ōtik] adj … English World dictionary
negative phototaxis — Phototaxis Pho to*tax is, Phototaxy Pho to*tax y, n. [NL. phototaxis; photo + Gr. ? an arranging.] (Biol.) The influence of light on the movements of low organisms, as various infusorians, the zo[ o]spores of certain alg[ae], etc.; also, the… … The Collaborative International Dictionary of English
phototaxis — Reaction of living protoplasm to the stimulus of light, involving bodily motion of the whole organism toward (positive p.) or away from (negative p.) the stimulus. Cf.:phototropism. [photo + G. taxis, orderly arrangement] * * * pho·to·tax·is tak … Medical dictionary
Phototactic — Phototaxis Pho to*tax is, Phototaxy Pho to*tax y, n. [NL. phototaxis; photo + Gr. ? an arranging.] (Biol.) The influence of light on the movements of low organisms, as various infusorians, the zo[ o]spores of certain alg[ae], etc.; also, the… … The Collaborative International Dictionary of English
Phototactically — Phototaxis Pho to*tax is, Phototaxy Pho to*tax y, n. [NL. phototaxis; photo + Gr. ? an arranging.] (Biol.) The influence of light on the movements of low organisms, as various infusorians, the zo[ o]spores of certain alg[ae], etc.; also, the… … The Collaborative International Dictionary of English
