Q. Which statement about photosynthesis is false?

1. Photosynthesis is a redox process in which water is oxidised and carbon dioxide is reduced.
2. The enzymes required for carbon fixation are located only in the grana of chloroplasts.
3. In green plants, both PS I and PS II are required for the formation of NADPH + H+.
4. The electron carriers involved in photophosphorylation are located on the thylakoid membranes