C4-plant differ from C3-plant in respect to

1. number of co2 molecule used
2. substrate which accept the co2 molecule
3. number of ATP formed
4. number of o2 formed

Hello Student
Correct Answer is 2. Substrate which accept the CO₂Molecule.
In C₃Plants CO₂combines with RuBP to form phospholglyceric Acid on the other hand in C₄Plants canbon dioxide is first picked up by phosphoenol pyruvate to form oxaloacetic acid.

Hi Garima
C4 plants differ from C3 plants wth respect to the substrate which accept the CO₂ molecule.

The primary CO2 acceptor in C3 cycle is Ribulose bis phosphate (RUBP a 5 carbon compound) whereas in case of C4 cycle the primary acceptor of CO2 is Phosphoenol pyruvic acid (PEP a 3 carbon compound).