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Science CBSE Homework Assignments
Class 8
Microorganisms: Friend and Foe
Diseases by microbes
2.
Characteristics and nature of the microorganisms
Task:
4.5
m.
Choose the best answer:
1.
Select the name of the bacteria involved in the leavening action of batter used for making idlies and parottas.
Lactobacillus mesenteroides
Saccharomyces cerevisiae
Aspergillus niger
2.
Diseases that can spread through the air are called
Airborne diseases
Air-spread diseases
Influential diseases
3.
Select the size range of bacteria
1 - 2 millimetres
0.002 - 0.1 millimetres
0.0002 - 0.01 millimetres
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