5. C3 Plant

This is a picture of a deciduous tree, which is an example of a C3 plant. A C3 plant is a plant that only uses the Calvin cycle for carbon fixation and makes a three-carbon compound during the Calvin cycle. Hot and dry conditions reduce the effectiveness of C3 photosynthesis.The majority of all plants are C3 plants, including most trees. This tree uses C3 photosynthesis instead of C4 or CAM likely because the climate it grows in is not especially hot or dry. So, because it grows in a temperate climate, it uses C3 photosynthesis effectively.