Question

Difference between C3 plants and C4 plants?

Answer 1

C3 plant are called temperature or cool season plant whereas C4 plant are often called tropical or warm season plant

Answer 2

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