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Subjects
Science CBSE
Class 8
Microorganisms - Friend and Foe
Helpful and diseasecausing microorganisms
19.
Characteristics and nature of the microorganisms
Exercise condition:
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.
Saccharomyces cerevisiae
Lactobacillus mesenteroides
Aspergillus niger
2.
Which of the following are friendly microorganisms?
Yeast
Pseudomonas putida
All the above
3.
Select the size range of bacteria
0.0002 - 0.01 millimetres
0.002 - 0.1 millimetres
1 - 2 millimetres
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