Definition of positive phototaxis. Meaning of positive phototaxis. Synonyms of positive phototaxis

Here you will find one or more explanations in English for the word positive phototaxis. Also in the bottom left of the page several parts of wikipedia pages related to the word positive phototaxis and, of course, positive phototaxis synonyms and on the right images related to the word positive phototaxis.

Definition of positive phototaxis

positive 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 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. -- Pho`to*tac"tic, a. -- Pho`to*tac"tic*al*ly, adv.

Meaning of positive phototaxis from wikipedia

- type of phototaxis is true phototaxis, which is a directed movement up a gradient to an increasing amount of light. This is analogous to positive chemotaxis...
- towards a light source. This reaction or behaviour is called positive phototaxis, since phototaxis refers to a response to light and the organism is moving...
- the organism to either swim towards the light (positive phototaxis), or away from it (negative phototaxis). A related response ("photoshock" or photophobic...
- circle artificial lights, although the reason for this behavior (positive phototaxis) is currently unknown. One hypothesis is called celestial or transverse...
- nigrescens exhibits positive phototaxis; when it senses light with its eye, it moves toward it. Other e**** nematodes have a negative phototaxis, moving away...
- abandon their nutrient intake and crawl, attracted by light – a positive phototaxistowards a dry, light area, to get an optimal spread of the spores...
- an example of chemotaxis as well. In the eukaryote Euglena, positive phototaxis and positive phobotaxis exhibit nearly the same action spectra, providing...
- migration. many zooplankton will react to increased pressure with positive phototaxis, a negative geotaxis, and/or a kinetic response that results in ascending...
- present in juvenile fish such as sockeye salmon smolts. Kinesis (biology) Phototaxis Phototropism Häder, D.-P.; Lebert, M. (2001). Photomovement. Elsevier...
- overcome the odds against formation of a new colony. Planulae exhibit positive phototaxis, swimming towards light to reach surface waters where they drift...
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