Question

Question 14: 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

Class 12 - Biology - Microbes in Human Welfare Page 190

Answer 1

Penicillin- help to treat numerous bacterial diseases and is an antibiotics.
Biogas - source of energy in rural areas, produce by anaerobic degeneration of organic matter
Curd- vitamin rich milk preparation which is easily digested
Citric acid- organic acids used as preservatives in juice, jams, jellies

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