Question Pool Microbes in Human Welfare

Microbes in Human Welfare - SAMAGRA Question Pool & Answers | Class 12

Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 12 Biology Microbes in Human Welfare

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Qn 1.

a. Observe the diagram a label A,B,D and E

b. Briefly explain the Biogas production



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Qn 2.

Explain the initiatives of Ganga Action Plan and Yamuna Action Plan



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Qn 3.

Differentiate between primary sludge, flocs and activated sludge



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Qn 4.

Give a short note on the Secondary treatment or biological treatment in sewage treatment



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Qn 5.

Give a note on the use of antibiotics have greatly improved the capacity against deadly diseases.



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Qn 6.

The first antibiotics discovered is ......................................................



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Qn 7.

The brewer’s yeast is ....................................................................



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Qn 8.

The Swiss Cheese are produced with the help of a bacterium. Name the Bacterium.



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Qn 9.

The microorganisms grow in milk and coverted to curd are commonly called.......



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Qn 10.

Explain the role of mycorrhiza in bio fertilisers



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Qn 11.

Viruses of genus Nucleopolyhedrovirus can be uses as____________________

a. Biofertilizers

b. Biogas producers

c. Biocontrol agents



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Qn 12.

Differentiate Primary and secondary treatment



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Qn 13.

a.Mention the action of LAB on milk

b.Write the significance of LAB



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Qn 14.

Match column A with column B and C



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Qn 15.

a.Name the pathogen that attack insects and other arthropodes.

b.Name the genus which is used as most common  bio control agent

c.Write the significance of most common biocontrol agent.



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Qn 16.

Match the column A with B and C



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Qn 17.

.Mention the significance of Bacillus thuringiensis



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Qn 18.

Write the significance of Ganga Action plan and Yamuna Action plan



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Qn 19.

Differentiate primary treatment and secondary treatment



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Qn 20.

Observed the diagrame

Name the virus



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Qn 21.

a.Identify the figure

b.Mention the infection caused by it



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Qn 22.

a.Antibiotics means  'Against life ' or 'pro life' - Substantiate

b.Explain the action of Antibiotics 

c.Name the antibiotic which was extensively used to treat the American soldiers in second world war.



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Qn 23.

a.Differentiate Chemical fertilizers and biofertilizers.

b.Mention the significance of Rhizobium as a biofertilizer



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