what are the main characteristics of kingdom monera?
['The Monerans are unicellular organisms.', 'They contain 70S ribosomes.', 'The DNA is naked and is not bound by a nuclear membrane.', 'It lacks organelles like mitochondria, lysosomes, plastids, Golgi bodies, endoplasmic reticulum, centrosome, etc.', 'They reproduce asexually by binary fission or budding.']