In which kingdom would you classify the archaea and nitrogenfixing organisms, if the fivekingdom system of classification is used ? (a) Plantae (b) Fungi (c) Protista (d) Monera
Option D The Kingdom Monera includes all prokaryotes. They are basically unicellular but can be mycelial, colonial and filamentous. They contain peptidogycan in cell wall. Naked circular DNA coiled to form nucleoid without association with histones, ribosomes 70S, thylakoids present in photoautotrophs but other membrane bound organelles are absent. Nutrition is of various types parasitic, chemoautotrophic, photoautotrophic and saprobic. Some monerans have the ability to fix nitrogen. Due to presence of these characters in archaea and nitrogenfixing organisms they are placed under monera. All others fungi, plantae, protists and animalia are eukaryotic.
