types of micro-organisms

1. 2024-04-23
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TYPES OF MICROORGANISMS
 Microorganisms are tiny celled organisms, like viruses, bacteria, fungi
and found everywhere.
 There are four main types of microorganisms. They are :-
bacteria, fungi, algae and protozoans.
 for example:-
1. Bacteria – lactobaccilus, E.Coli etc.
2. Algae – Chlamydomonas, Spirogyra etc.
3. Fungi – Bread mould, Penicillium, Aspergilles etc.
4. Protozoans – Amoeba, Paramaecium etc.
 Viruses are also considered as microorganisms. They are different
from other microorganisms because they reproduce only in the
body of host organisms like bacteria, plants or animals.
 Common ailments like cold, influenza(flu) and most coughs are
caused by viruses. Serious diseases like polio and chicken pox are
also caused by viruses.

2. 2024-04-23
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TYPES OF MICROORGANISMS
BACTERIA ALGAE
PROTOZOA
FUNGI
Spiral bacteria Rod-shaped bacteria Chlamydomonas Spirogyra
Amoeba Paramecium
Bread Mould Penicillium Aspergillus

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Some common human diseases caused by microorganisms:-
HUMAN DISEASE CAUSATIVE MICROORGANISM MODE OF TRANSMISSION
Chicken pox Virus Air / Contact
Polio Virus Air / Water
Measles Virus Air
Hepatitis – B Virus Water
Tuberculosis Bacteria Air
Typhoid Bacteria Water
Cholera Bacteria Water / Food
Malaria Protozoa Mosquito
Some common plant diseases caused by microorganisms :-
PLANT DISEASE CAUSATIVE MICROORGANISM MODE OF TRANSMISSION
Citrus canker Bacteria Air
Rust of wheat Fungi Air / Seed
Yellow mosaic of
Okra (Lady’s finger)
bhindi
Virus Water
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