Microorganisms are not similar to each other, they differ not only in size but also in structure, habitat, metabolism and several other characteristics. As the name suggests those organisms that are ...

The Darwinian revolution created a new approach to classification by proposing a common origin for living organisms. Since then, scientists have grouped animals and plants phylogenetically, rather ...

Micro-organisms constitute a very antique group of living organisms which appeared on the Earth’s surface almost 3000 million years ago. The questions arising from the study of the origin and ...