phototaxis
[/ˌfoʊtoʊˈtæksɪs/]
nounpl: phototaxes
fototaxia
1. The movement or orientation of an organism in response to light stimulus, either toward light (positive phototaxis) or away from light (negative phototaxis)
The phototaxis of the moth toward the flame demonstrates the insect's attraction to light sources.
A fototaxia da traça em direção à chama demonstra a atração do inseto por fontes de luz.
2. A form of taxis in which organisms move in response to light intensity and direction
Algae exhibit positive phototaxis, moving toward sunlight for photosynthesis.
As algas exibem fototaxia positiva, movendo-se em direção à luz solar para fotossíntese.
Phototaxis is a fundamental concept in biology and behavioral science studied in both Brazilian and American universities. The term is used identically in scientific contexts across both countries. The phenomenon is commonly observed in nature (insects to light, algae to sun) and is often used as an educational example to explain animal behavior and stimulus-response mechanisms.
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