In this article we will discuss about the ten main orders under which bacteria has been classified. Order I. Pseudomonadales: It includes some photosynthetic, some chemosynthetic and many heterotrophic bacteria with straight, curved or spiral rods usually with polar flagellation. They are gram-negative and reproduce always by fission. The order includes 7 families. Of these the two important ones are: [...]
In this article we will discuss about the evolutionary relationships of bacteria. The early investigators considered bacteria as animalcules and place them with the Protozoa. This viewpoint was held up to the middle of the last (nineteenth) century. Some assigned them a position of the border line between plants and animals. They place this group of structurally simple organisms, which [...]
The following article will guide you to find out how does bacteria reproduce. Asexual reproduction is characteristic of all bacteria. Sexual reproduction was long thought to be absent but investigations with the help of electron microscope have clearly demonstrated the exchange of genetic material in some species of bacteria. This is an essential feature of the sexual process and is [...]