Why are c4 and cam plants able to photosynthesize with no apparent photorespiration?

Photorespiration is defined as a respiratory process in many higher plants in which plants take up the oxygen in the presence of light and produces carbon dioxide while in photosynthesis plants utilises sunlight and carbon dioxide to produce oxygen.

C4 plants able to photosynthesize with no apparent photorespiration because they use Phosphoenolpyruvate (PEP) carboxylase in order to fix CO2.

CAM plants keep the stomata closed throughout the day, thus reducing water loss.

Thus, Both reduce photorespiration but during carbon fixation they use more ATP and able to photosynthesize with no apparent photorespiration.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: