They are of 4 major groups

  • Bacteria
  • Fungi
  • Protozoa
  • Algae

 

Apart from this, there are Virus which are also microorganisms, but they are different than other Microorganisms. They grow only inside cells of other plants and animals

 

Different Microorganism Definition and Examples

 

Diff Types of Microorganisms

Description

Examples

Bacteria

They are small single cell organisms.Their cell have cell wall but no nucleus.They can be - spherical, spiral or Rod shaped

Lactobacillus Bacteria, Rhizobium Bacteria

Protozoa

They are animal like microorganisms. Many of them are parasites and feed on other organisms

Amoeba, Paramecium

Algae

They are plant like microorganisms.

They contain chlorophyll and do photosynthesis to make food

Chlamydomonas,

Spirogyra

Fungi

They are small organisms which have nucleus.They look like plants, but they cannot make their food like plants. They do not have chlorophyll and do not do photosynthesis

Yeasts, Moulds

Different Types of Microorganisms -  Bacteria Protozoa Algae Fungi - with  examples of each.jpg

What are Virus?

Virus are microorganisms which reproduce only inside cells of other plants and animals.

They are agents of disease

  • Virus cause cold and flu (influenza).
  • Virus cause serious diseases like chicken pox and Polio

Virus.jpg

 

Different Types of Microorganisms - Summary Flowchart.jpg

 

Questions

NCERT Question 5 - What are the major groups of microorganisms?
View Answer

 

  1. Class 8
  2. Chapter 2 Class 8 - Microorganisms : Friend and Foe

About the Author

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.