In certain plants in order to overcome the photorespiration another pathway of CO2 fixation along with C3 pathway is there, it is known as C4 cycle or C4 pathway. Since this pathway was discovered by Hatch and Slack, it is also known as Hatch and Slack pathway. In this pathway the first stable compound produced is a 4 - carbon, so called C4 cycle or C4 pathway. The plants that perform C4 pathway are known as C4 plants, they possess a special type of anatomy called Kranz anatomy.
