Ans :- Microbiology is the study of microorganisms, those being unicellular, multicellular, or acellular. Microbiology encompasses numerous sub-disciplines including virology, parasitology, mycology and bacteriology.

Microbiology can be broadly classified as :

General Microbiology

Applied Microbiology

But the branches of Microbiology as listed below:

Bacteriology: the study of bacteria.

Mycology: the study of fungi.

Protozoology: the study of protozoa.

Phycology/algology: the study of algae.

Parasitology: the study of parasites.

Virology: the study of viruses.

Nematology: the study of nematodes.

Microbial cytology: the study of microscopic and submicroscopic details of microorganisms.

Microbial physiology: the study of how the microbial cell functions biochemically. Includes the study of microbial growth, microbial metabolism and microbial cell structure.

Microbial ecology: the relationship between microorganisms and their environment.

Microbial genetics: the study of how genes are organized and regulated in microbes in relation to their cellular functions. Closely related to the field of molecular biology.

Cellular microbiology: a discipline bridging microbiology and cell biology.

Evolutionary microbiology: the study of the evolution of microbes. This field can be subdivided into:

Microbial taxonomy: the naming and classification of microorganisms.

Microbial systematic: the study of the diversity and genetic relationship of microorganisms.

Generation microbiology: the study of those microorganisms that have the same characters as their parents.

Molecular microbiology: the study of the molecular principles of the physiological processes in microorganisms.

Medical microbiology: the study of the pathogenic microbes and the role of microbes in human illness.

Industrial microbiology: the exploitation of microbes for use in industrial processes.

Agricultural microbiology: the study of agriculturally relevant microorganisms.

Food microbiology: the study of microorganisms causing food spoilage and foodborne illness.

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