I need help hurry fast 20 point to first person what is the term for a plant movement or growth in response to light.

I think it's phototrophism.

Explanation:

Photo-light

Trophism-the turning of all or part of an organism in a particular direction in response to an external stimulus.

So Phototrophism is the turning of all or part of an organism (in this case a plant) in a particular direction (this is the movement/growth) in response to an external stimulus(light).  

where is the diagram?

if you insert the diagram ill be able to you

the answer is:

carbon dioxide