Difference between C3 and C4 plants.
C3 plants :- ० Found in all photosynthetic plants. ० Plants that use the cycle can be hydrophytic, mesophytic and xerophytic. ० Photoactive Stomata. ० High rate of Photorespiration. ० Normal Leaf anatomy. ० For the synthesis of glucose molecule or 6CO2 fixation : 12 NADPH and 18 ATPs are required. ० Single CO2 fixation occurs. ० Primary CO2 atmospheric acceptor RUBP. ० First stable product 3PGA. ० First enzyme involved RUBISCO. ० Carbon dioxide compensation point: 30-70PPM. C4 Plants :- ० Only in tropical plants. ० Plants that use the cycle can be mesophytic. ० Photoactive Stomata. ० Photorespiration: less or negligible. ० Kranz anatomy. ० 12 NADPH and 30 ATPs are required. ० Double carbon dioxide fixation. ० Atmosphere Co2 acceptor- PEP(In mesophyll cell) and Metabloic Co2 acceptor-RUBP(In bundle sheath cell). ० First stable product OAA (Oxalo acetic acid). ० First enzyme involved PEP Carboxylase. ० CO2 compensation point: 10PPM.