Medicine Pneumonia, Bronchiectasis, and Lung Abscess eb6d7ee6 Unipolar flagellate organism that causes pneumonia- A Pseudomonas B Mycoplasma C Aeromonas D Klebsiella pneumonia High-Yield Explanation Ans. is 'a' i.e., Pseudomonas o Pseudomonas aeruginosa is a Gram-negative, aerobic rod shaped and polar-flagella bacterium with unipolar motility.