True bacteria are termed as:

Explanation

Eubacteria, or true bacteria, are a major group of prokaryotic microorganisms characterized by their peptidoglycan-containing cell walls and their adaptability to diverse environments. They are distinct from archaeobacteria, which are prokaryotes with unique genetic and biochemical features found in extreme habitats. Cyanobacteria are a subgroup of eubacteria known for photosynthesis but do not encompass the entire true bacteria group. Therefore, the correct answer is Eubacteria.