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Chapters
Chapter 2: Sexual Reproduction in Flowering Plants
Chapter 3: Human Reproduction
Chapter 4: Reproductive Health
Chapter 5: Principles of Inheritance and Variation
Chapter 6: Molecular Basis of Inheritance
Chapter 7: Evolution
Chapter 8: Human Health and Disease
Chapter 9: Strategies for Enhancement in Food Production
Chapter 10: Microbes in Human Welfare
Chapter 11: Biotechnology : Principles and Processes
Chapter 12: Biotechnology and its Applications
Chapter 13: Organisms and Populations
Chapter 14: Ecosystem
Chapter 15: Biodiversity and Conservation
Chapter 16: Environmental Issues
Solutions for Chapter 10: Microbes in Human Welfare
Below listed, you can find solutions for Chapter 10 of CBSE, Karnataka Board PUC NCERT for Class 12 Biology.
NCERT solutions for Class 12 Biology Chapter 10 Microbes in Human Welfare Exercises [Pages 189 - 190]
Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes under a microscope, which sample would you carry and why?
Give examples to prove that microbes release gases during metabolism.
In which food would you find lactic acid bacteria? Mention some of their useful applications.
Name some traditional Indian foods made of wheat, rice and Bengal gram (or their products) which involve use of microbes.
In which way have microbes played a major role in controlling diseases caused by harmful bacteria?
Name any two species of fungus, which are used in the production of the antibiotics.
What is sewage? In which way can sewage be harmful to us?
What is the key difference between primary and secondary sewage treatment?
Do you think microbes can also be used as source of energy? If yes, how?
Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.
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?
Find out the name of the microbes from which Cyclosporin A (an immunosuppressive drug) and Statins (blood cholesterol lowering agents) are obtained
Find out the role of microbes in the following
Single cell protein (SCP)
Find out the role of microbes in the following
Soil
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
How do biofertilisers enrich the fertility of the soil?
Solutions for Chapter 10: Microbes in Human Welfare
NCERT solutions for Class 12 Biology chapter 10 - Microbes in Human Welfare
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Concepts covered in Class 12 Biology chapter 10 Microbes in Human Welfare are Microbes in Household Products, Microbes in Industrial Production, Microbes in Sewage Treatment, Energy Generation, Microbes as Biocontrol Agents, Production and Judicious Use, Microbes in Human Welfare, Microbes in Production of Biogas, Microbes in Human Welfare, Microbes as Biofertilizers.
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