I was studying my science quizlet on growing and flowing vocabulary flashcards, one of the questions was about phototropism. Phototropism: The tendency for a plant to grow towards light.
I know that the prefix "photo" is used in "photosynthesis" and based on this I can infer that "photo" means light. So what does photography or photograph have to do with light?
After some research I found that,
"Photography is the science, art, application and practice of creating durable images by recording light or other electromagnetic radiation." - Wikipedia
This helps me understand that by taking a picture you are recording light. That is why the prefix "photo" is used in the words photography and photograph!
(Pictures taken from www.cnet.com and www.pcwallart.com)