Are the major branches of physiology human, plant, animal, and bacterial? Or are they comparative, environmental, evolutionary, developmental, and cellular?
The second set...
Look at the definitions of each item. The FIRST set is a list of different organism TYPES. They are major branches of Biology.
The second set is a list of adjectives that modify the noun 'physiology'. Physiology is the study of organism mechanisms, which can be applied to any genus , but the sub-branches are within the discipline, not a definition of the objects.