Why is the food making process in plants called photosynthesis?
"-synthesis" means creation or making, "photo-" refers to light. Put together photosynthesis means creation in the presence of light or with light, which is essentially what a plant does during this process: they use light energy to create food.
Photosynthesis is not a system. It is a process in plants. It is very important process. Photosynthesis is a process of making sugars from CO2 and water by using light energy. Photosystem I and photosystem II are involved in this process to transfer electrons across the membrane. Photosynthesis occurs in plants algae and certain bacteria.