photokinesis
/ˌfoʊtoʊkɪˈnisɪs/
noun
- Movement or change in position that is caused by or in response to light, especially in simple organisms.
- Scientists studied the photokinesis of algae to understand how they move toward sunlight.
- The experiment measured photokinesis in bacteria exposed to different light levels.
- Photokinesis helps some tiny aquatic creatures find the best depth for feeding.