A process that makes important difference between C3 and C4 plants is :
Transpiration
Glycolysis
Photosynthesis
Photorespiration
As discussed in
Photorespiration -
A process in plant metabolism where enzyme RuBisCO oxygenates RuBP, causing some of the energy produced by photosynthesis to be wasted.
- wherein
O2 enters Calvin cycle instead of Co2 this results in reduced rate of photosynthesis.
Photorespiration is negligible in C4 but present in C3
Option 1)
Transpiration
This is incorrect option
Option 2)
Glycolysis
This is incorrect option
Option 3)
Photosynthesis
This is incorrect option
Option 4)
Photorespiration
This is correct option