What Is Meant by Phototactic?

the movement of an organism away from or toward a source of light. — phototactic, adj. See also: Light. the movement of an organism away from or toward a source of light.

What is meant by positive phototaxis?

Definition: The directed movement of a cell or organism towards a source of light.

What does Phototactic response mean?

Phototaxis is the ability of organisms to move directionally in response to a light source. Many cyanobacteria exhibit phototaxis, both towards and away from a light source. In the environment, the ability to move into optimal light conditions for photosynthesis is likely to be an advantage.