Micro Organisms

Front 1

Bacteria

Back 1

*Bacterium rhizobium helps in fixing nitrogen

*bacterium yeast helps in swelling up of cake base idli and fermentation.

*bacterium lactobacillus helps in making curd

*some bacteria cause harmful diseases

Hint 1

Bacteria are both harmful and useful

Front 2

Virus

Back 2

*virus is the Japanese word for poison

* virus is actually very harmful it can not be used anywhere.

*virus causes many diseases

Hint 2

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Front 3

Algae

Back 3

*algae lives at moisture place like distilled water or wet mud

*most of the algae are blue green in colour

*they live in colonies

* some algae can survive in any climatic conditions

*some blue green algae help in fixing nitrogen

Hint 3

Front 4

Protozoa

Back 4

*protozoa are harmful

*they can survive in many condition

Hint 4

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