This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'An organism grown on agar shows green coloured colonies, likely organism is - \nSelect and explain. \nA. Staphylococcus, B. Streptococcus, C. Pseudomonas, D. E. coli', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is `c' i.e., Pseudomonas Pseudomonas aeruginosa . Morphology - Gram negative bacilli - Motile by polar flagellum - Non capsulated but many strains have mucoid slim layer especially the organisms which are isolated from cystic fibrosis patient. . Culture - Obligate aerobe - Colonies emit a distinctive, musty, mawkish, eahy or sweet grape-like odour or corn tocolike odour. - Cetrimide agar is a selective media. - Pseudomonas aeruginosa produces a numbers of pigments. The production of these pigments accounts for the colour of colonies. - Pyocyanin is produced only by P.aeruginosa and it inhibits the growth of many other bacteria. - Pyoverdin may be produced by many other species.", 'role': 'assistant'}]