A direct response in response to the presence of light in organism, where a positive effect sees the organism move towards the light and a negative one away from the light.

Please contribute to this project, if you have more information about this term feel free to edit this page

This page was last modified on 3 October 2005, at 21:16. This page has been accessed 20,237 times. 
What links here | Related changes | Permanent link