Class 12 Biology - Chapter Microbes in Human Welfare NCERT Solutions | Arrange the following in the decreasing
Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer.
Biogas, Citric acid, Penicillin and Curd
The order of arrangement of products according to their decreasing importance is:
Penicillin- Biogas − Citric acid − Curd
Penicillin is the most important product for the welfare of human society. It is an antibiotic, which is used for controlling various bacterial diseases. The second most important product is biogas. It is an eco-friendly source of energy. The next important product is citric acid, which is used as a food preservative. The least important product is curd, a food item obtained by the action oflactobacillus bacteria on milk.
Hence, the products in the decreasing order of their importance are as follows:
Penicillin- Biogas − Citric acid − Curd
More Questions From Class 12 Biology - Chapter Microbes in Human Welfare
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- Q:- Find out the role of microbes in the following and discuss it with your teacher.
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- Q:- Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD test. The samples were labelled A, B and C; but the laboratory attendant did not note which was which. The BOD values of the three samples A, B and C were recorded as 20mg/L, 8mg/L and 400mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct label to each assuming the river water is relatively clean?
- Q:- In which food would you find lactic acid bacteria? Mention some of their useful applications.
- Q:- Name some traditional Indian foods made of wheat, rice and Bengal gram (or their products) which involve use of microbes.
- Q:- Do you think microbes can also be used as source of energy? If yes, how?
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Fill in the blanks:
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1 Comment(s) on this Question
It is very useful during lockdown in homes
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