What Are Mycoplasmas?

Mycoplasmas are also known as PPLO. It stands for Pluero Pneumonia like organisms. They have no cell wall so they can change their shape and are referred as pleomorphic. They are smallest and very simple organisms. Their genetic material is single DNA which is naked. They have heterotrophic mode of nutrition. Although few of them are also saprophytes. Their size is around 0.1um. Nocard and Roux discovered them in 1898.