how does \'rubisco\' act as carboxylase oxygenase respectively ?

1.	how does \'rubisco\' act as carboxylase oxygenase respectively ?
Answer» The increase in CO2 ensures that the enzyme RuBisCo does not act as an oxygenase, but as a carboxylase. This prevents photorespiration and increases the rate of photosynthesis. Thus, C4 plants are highly productive.The enzyme RuBisCo is absent from the mesophyll cells of C4 plants.

Discussion