The type of movement that responds to a change in light intensity is called [[1]] movement.

The type of movement that responds to changes in light intensity is called photonastic movement. 

In photonastic movement, the plant responds to the intensity of light, where the movement is not directed towards or away from the light source. An example of photonastic movement is the opening and closing of flowers in response to changes in light intensity. Noon flowers are an example of plants that exhibit photonastic movement, where the flowers open up in sunlight and then close when the intensity of light decreases usually at sunset or a cloudy day.