Methanogenic bacteria are not found in:

1. rumen of cattle

2. gobar gas plant

3. bottom of water-logged paddy fields

4. activated sludge

Subtopic:  Microbes in Sewage Treatment |
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The free-living fungus Trichoderma can be used for:

1. killing insects

2. biological control of plant diseases

3. controlling butterfly caterpillars

4. producing antibiotics

Subtopic:  Microbes in Biocontrol Agent |
 79%
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Mycorrhiza does not help the host plant in:

1. Enhancing its phosphorus uptake capacity
2. Increasing its tolerance to drought
3. Enhancing its resistance to root pathogens
4. Increasing its resistance to insects
Subtopic:  Microbes in Biocontrol Agent |
 69%
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Which one of the following is not a nitrogen-fixing organism?

1.  Anabaena 2.  Nostoc
3.  Azotobacter 4.  Pseudomonas

Subtopic:  Microbes as Biofertilizer |
 87%
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Methanogens do not produce:

1. oxygen 2. methane
3. hydrogen sulfide 4. carbon dioxide

Subtopic:  Microbes in Production of Biogas |
 86%
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During which stage of the sewage treatment are the microbes used?

1.  Primary 2.  Secondary
3.  Tertiary 4.  Quaternary
Subtopic:  Microbes in Sewage Treatment |
 91%
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Biogas is a mixture of:

1. Methane, Carbon dioxide, and Hydrogen sulfide
2. Methane, Carbon dioxide, and Ammonia
3. Methane, Ammonia, and Hydrogen sulfide
4. Ammonia, Carbon dioxide, and Hydrogen sulfide
Subtopic:  Microbes in Production of Biogas |
 89%
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‘Toddy’, a traditional drink of some parts in southern India, is made by fermenting sap from:

1. Soyabean 2. Bamboo shoots
3. Palms 4. Sugarcane
Subtopic:  Industrial Products, Beverages & Antibiotics | Chemicals, Enzymes & Other Bioactive Molecules |
 85%
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The ‘Roquefort cheese’ is ripened by:

1. A fungus 2. A bacterium
3. An algae 4. Lichens
Subtopic:  Industrial Products, Beverages & Antibiotics | Chemistry of Fermented Beverages |
 80%
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With reference to human beings, antibiotics are actually:

1. Anti life 2. Pro-life
3. Irrelevant to life 4. Defining life
Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 84%
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