C3, C4, and CAM photosynthesis.

Is C4 Rice the next Green Revolution?

C3, C4, and CAM refers to the different photosynthetic pathways that are present in individual plant species and are the result of adapting to various climatic conditions.

C4 hot season growing grass, kangaroo grass, Themeda triandra. Image — Peter Miles.

C3 and C4 indicates the number of carbon atoms in the sugar molecules produced by the photosynthesis. CAM is Crassulacean acid metabolism in which carbon dioxide CO2 is fixed…