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NEET Biology / AI question bank / NCERT Class 12 / Biology and Human Welfare

Microbes in Human Welfare: NEET questions with solutions

This chapter covers microbes in food, industry, sewage treatment, biogas, biocontrol and biofertilisers. Marks are lost on exact organism-product pairs, which drinks are distilled and the stages of sewage treatment.

Also called: microbes · biofertilisers · sewage treatment · antibiotics

Revise first: NCERT notes for Microbes in Human Welfare

Questions

10 questions / answers after you pick

  1. Q1The large holes in Swiss cheese are produced by the release of carbon dioxide from which microbe?

    Microbes in household productsEasySingle correct

  2. Q2The first antibiotic to be discovered, penicillin, is obtained from which organism?

    Microbes in industrial productsEasySingle correct

  3. Q3Which group of microbes is mainly responsible for generating methane in a biogas plant and also lives in the rumen of cattle?

    BiogasEasySingle correct

  4. Q4Statements I and II below concern the production of alcoholic drinks by yeast. Which of the options is correct?

    Fermented beveragesMediumStatement based

  5. Q5Read the Assertion and the Reason about the secondary stage of sewage treatment, and choose the correct option.

    Sewage treatmentMediumAssertion–Reason

  6. Q6Match the organic acid in Column I with the microbe that produces it in Column II.

    Microbes in industrial productsMediumMatch the following

  7. Q7Statins, used to lower blood cholesterol, are obtained from which microbe, and how do they act?

    Bioactive moleculesMediumSingle correct

  8. Q8A water sample from a river is found to have a very high biochemical oxygen demand. What does this indicate?

    Sewage treatmentMediumSingle correct

  9. Q9Which of the following pairings of a microbe and its role is INCORRECT?

    BiofertilisersHardSingle correct

  10. Q10Which description of the baculoviruses used in integrated pest management is correct?

    Biocontrol agentsHardSingle correct

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