Photorespiration is a wastefull process because it doesn't synthesis ATP.
but in new ncert it is mentioned that the requirements of photorespiration is not known yet.

Introduction:
Photorespiration is a metabolic pathway that occurs in plants and some algae when they undergo photosynthesis. It is a wasteful process that occurs when the concentration of carbon dioxide (CO2) is low and oxygen (O2) is high. Photorespiration can reduce the efficiency of photosynthesis and limit the growth of plants. However, it does not occur in all types of plants.

Explanation:
C3 Plants:
Photorespiration occurs in C3 plants, which include the majority of plant species. These plants use the enzyme RuBisCO (Ribulose-1,5-bisphosphate carboxylase/oxygenase) to fix CO2 during photosynthesis. However, when CO2 levels are low and O2 levels are high, RuBisCO can mistakenly bind to O2 instead of CO2. This results in the production of a toxic compound called phosphoglycolate, which needs to be metabolized through photorespiration.

C4 Plants:
C4 plants have evolved a mechanism to minimize photorespiration. They have an additional step before the Calvin cycle, called the C4 pathway. In this pathway, CO2 is first fixed to a 3-carbon molecule called phosphoenolpyruvate (PEP) in the mesophyll cells. The resulting 4-carbon compound is then transported to bundle sheath cells, where it releases CO2 for the Calvin cycle. By concentrating CO2 in the bundle sheath cells, C4 plants can reduce the likelihood of O2 binding to RuBisCO and minimize photorespiration.

Algae:
Some types of algae, such as green algae, also undergo photorespiration. These algae use the same enzyme RuBisCO as plants and can experience similar issues with low CO2 and high O2 concentrations. Therefore, photorespiration can occur in certain algae species.

Bacteria:
Bacteria do not undergo photosynthesis in the same way as plants and algae. They have different metabolic pathways and enzymes involved in carbon fixation. Therefore, photorespiration does not occur in bacteria.

Conclusion:
In conclusion, photorespiration does not occur in C4 plants, as they have evolved a mechanism to minimize its effects. However, it does occur in C3 plants and some types of algae. Bacteria, on the other hand, have different metabolic pathways and do not undergo photorespiration.