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Earn 100
Photoautotrophic bacteria synthesize food material by using
I) Chemical energy in organic substances
II)
III) Organic form of carbon
IV) Light energy
50% studentsanswered this correctly
Important Questions on Microbiology
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Study the following table
| Organism | Group | Process | |
| I) | Rhodospirillum | Non-sulphur bacterium | Photo heterotroph |
| II) | Bacillus | Purple sulphur Bacteria | Chemo autotroph |
| III) | Xanthomonas | Parasitic bacterium | Chemo heterotroph |
| IV) | Rhizobium | symbiont bacterium | Photo heterotroph |
Which two taxa shows the correct combination?
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I) Rhodospirillum
II) Azospirillum
III) Clostridium
IV) Chlorobacterium
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Study the following table
| Type | Example | Role | |
| I) | Sulphur Bacterium | Thiobacillus thiooxidans | Oxidation of elemental sulphur |
| II) | Nitrogen fixing Bacterium | Nitrobacter | Oxidation of nitrites |
| III) | Iron Bacterium | Thiobacillus thiooxidans | Oxidation of Ferric salts to ferrous ions |
| IV) | Hydrogen Bacterium | Hydrogenomonas | Oxidation of |
The correct combination is
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| List-I | List-II | List-III | |
| I) | Ammonifying Bacterium | Bacillus | Converts Proteins into |
| II) | Nitrifying Bacterium | Nitrosomonas | Oxidation of ammonia |
| III) | Nitrogen-fixing Bacterium | Chlorobacterium | Fix dinitrogen |
| IV) | Nitrifying Bacterium | Nitrobacter | Oxidation of nitrite |
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Identify the correct pair of combination:
| I) Parbhani Kranti | Resistance to Virus | Bhindi |
| II) Pusa Gaurav | Resistance to Aphids | Mustard |
| III) Pusa Sadabahar | Resistance to fruit borer | Cow pea |
| IV) Pusa Shubhra | Resistance to white rust | Cauliflower |
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I) Viroid - Bovine Spongiform Encephalitis
II) Prion - Creutzfeldt-Jakob disease
III) Measles virus - Glycoprotein projections
IV) Rabies virus - Polyhedral symmetry
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Assertion (A) : Azolla is used as a biofertilizer in rice fields.
Reason (R) : Azolla contains nitrogen-fixing cyanobacteria in its root nodules.
The correct answer is
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