Bacteria are classified under which kingdom?

Bacteria are classified under the Monera Kingdom, which is specifically dedicated to prokaryotic organisms. This kingdom is characterized by its lack of a membrane-bound nucleus and other organelles, setting bacteria apart from eukaryotic organisms found in the other kingdoms such as Animalia, Plantae, and Fungi. Monera encompasses all bacteria, both eubacteria and archaea, highlighting their unique features and biological processes. The classification helps distinguish these organisms based on their cellular structure, metabolic pathways, and ecological roles, particularly their significance in wastewater treatment as decomposers and facilitators of nutrient cycling.