What are the two stages of photosynthesis called?

The two stages of photosynthesis are indeed referred to as light-dependent reactions and the Calvin cycle.

In the light-dependent reactions, which take place in the thylakoid membranes of the chloroplasts, light energy is captured and converted into chemical energy in the form of ATP and NADPH. This stage requires sunlight to drive the process, extracting electrons from water and releasing oxygen as a byproduct.

The Calvin cycle, on the other hand, occurs in the stroma of the chloroplasts and does not directly require light. Instead, it uses the ATP and NADPH produced in the light-dependent reactions to convert carbon dioxide and ribulose bisphosphate (RuBP) into glucose and other carbohydrates through a series of enzymatic reactions.

The other options, while containing terms that relate to cellular processes, are not accurate in describing the two main stages of photosynthesis. Glycolysis pertains to cellular respiration, and the Krebs cycle is also a part of cellular respiration, distinct from the processes involved in photosynthesis.