a plant requires energy to perform photosynthesis
photosynthesis is not chemical_process. photosynthesis is process. photosynthesis is not process. photosynthesis is chemical_process. photosynthesis is photo_chemical_process. general_photosynthesis is biological_energy_transfer. general_photosynthesis is production. general_photosynthesis is not production. photosynthesis_in_plants is not physiological_process. photosynthesis_in_plants is physiological_process.