Question

what is photorespiration?​

Answer 1

Answer:

a respiratory process in many higher plants by which they take up oxygen in the light and give out some carbon dioxide, contrary to the general pattern of photosynthesis.

Photorespiration can be defined as the evolution of CO2 during photosynthesis. It arises because rubisco can act as either a carboxylase (incorporating CO2) or as an oxygenase (incorporating O2). In the presence of relatively high CO2 levels, rubisco acts mainly as a carboxylase.