Q. No.Identify the colonies labelled as A and B.
1. A-Fungal; B-Bacterial
2. A-Bacterial; B-Fungal
3. A-Algal; B-Viral
4. A-Fungal; B-Algal
_______ enzyme is used to remove clots from the blood vessels of patients who have undergone _______leading to heart attack.
| 1. | A-Streptokinase; B-Myocardial infraction |
| 2. | A-Lipases; B-Arteriosclerosis |
| 3. | A-Proteases; B-Myocardial infraction |
| 4. | A-Pectinases; B-Atherosclerosis |
Match the following list of microbes and their importance:
| a. | Sacharomyces cerevisiae | (i) | Production of immunosuppressive agents |
| b. | Monascus purpureus | (ii) | Ripening of Swiss cheese |
| c. | Trichoderma polysporum | (iii) | Commercial production of ethanol |
| d. | Propionibacterium sharmanii | (iv) | Production of blood cholestrol lowering agents |
1. a(iii), b(i), c(iv), d(ii)
2. a(iii), b(iv), c(i), d(ii)
3. a(iv), b(iii), c(ii), d(i)
4. a(iv), b(ii), c(i), d(iii)
Select the correct group of biocontrol agents:
| 1. | Nostoc, Azospirillium, Nucleopolyhedrovirus |
| 2. | Bacillus thuringiensis. Tobacco mosaic virus, Aphids |
| 3. | Trichoderma, Baculovirus, Bacillus thuringiensis |
| 4. | Oscilatoria, Rhizobium, Trichoderma |
Among the following pairs of microbes, which pair has both the microbes that can be used as biofertilizers ?
1. Aspergillus and Rhizopus
2. Rhizobium and Rhizopus
3. Cyanobacteria and Rhizobium
4. Aspergillus and Cyanobacteria
Which of the following statements about methanogens is not correct?
| 1. | The can be used to produce biogas, |
| 2. | They are found in the rumen of cattle and their excreta. |
| 3. | They grow aerobically and breakdown cellulose-rich food. |
| 4. | They produce methane gas. |
Bacteria responsible for gobar gas formation are
| 1. | Methanogens | 2. | Thermophilic |
| 3. | Ammonifying | 4. | Nitrifying |
Rising of dough is due to
1. multiplication of yeast
2. production of CO2
3. emulsification
4. hydrolysis of wheat flour starch into sugars
High value of BOD (Biochemical Oxygen Demand) indicates that:-
| 1. | water is pure |
| 2. | water have heavy metal |
| 3. | water is less polluted |
| 4. | consumption of organic matter in the water is higher by the microbes |
'Trichoderma' which are used as biological control agent for different plant disease are:-
1. Virus
2. Free-living fungi
3. Free-living Bacteria
4. Symbiotic Bacteria
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