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Q. No.Consider the given two statements:
I. Glomus species cannot be cultured in the laboratory in the absence of a plant host.
II. Glomus species form symbiotic relationships (mycorrhizae) with plant roots.
1. Both I and Ii are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is incorrect but II is correct
4. I is correct but II is incorrect
Subtopic: Microbes as Biofertilizer |
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| Assertion (A): | The organic farmer holds the view that eradication of pest is undesirable |
| Reason (R): | Biocontrol is not a good strategy to control pest |
| 1. | Both (A) and (R) are True and the (R) is the correct explanation of the (A) |
| 2. | Both (A) and (R) are True but the (R) is not the correct explanation of the (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Microbes in Biocontrol Agent |
66%
From NCERT
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During secondary treatment of sewage water:
| I: | vigorous growth of useful aerobic microbes into flocs is allowed |
| II: | aerobic microbes consume the major part of the organic matter in the effluent. |
| III: | the BOD of the water sample gets significantly increased |
| 1. | Only I and II are correct |
| 2. | Only I is correct |
| 3. | Only II and III are correct |
| 4. | I, II and III are correct |
Subtopic: Microbes in Sewage Treatment |
68%
From NCERT
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Identify the correct statement:
| 1. | Roquefort cheese is ripened by a growing a specific bacterium on them |
| 2. | LAB improves the nutritional quality of curd by increasing Vitamin A |
| 3. | Aspergillus niger is used for commercial production of citric acid |
| 4. | Statins are used to lower blood glucose levels in IDDM |
Subtopic: Chemicals, Enzymes & Other Bioactive Molecules |
86%
From NCERT
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All the following are correct regarding Methanogens except:
| 1. | They can grow anaerobically on cellulosic material |
| 2. | They can produce large amounts of methane along with carbon dioxide and hydrogen |
| 3. | They can be found in anaerobic sludge during sewage treatment and in rumen of cattle |
| 4. | They are true bacteria and are chemoheterotrophs |
Subtopic: Microbes in Sewage Treatment |
81%
From NCERT
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In a sample of water polluted with sewage discharge, if you measure BOD [Biochemical Oxygen Demand] and DO [Dissolved Oxygen], you expect to find that:
| 1. | The levels of both BOD and DO are high |
| 2. | The levels of both BOD and DO are low |
| 3. | The levels of BOD will be high and the levels of DO will be low |
| 4. | The levels of BOD will be low and the levels of DO will be high |
Subtopic: Microbes in Sewage Treatment |
87%
From NCERT
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Consider the two statements:
| I: | Biochemical oxygen demand (BOD) is often used as an indicator of the degree of organic pollution of water. |
| II: | An increase in BOD is used as a gauge of the effectiveness of wastewater treatment plants. |
| 1. | Only I is correct | 2. | Only II is correct |
| 3. | Both I and II are correct | 4. | Both I and II are incorrect |
Subtopic: Microbes in Sewage Treatment |
50%
From NCERT
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Lady beetles, and in particular their larvae, are voracious predators of:
| 1. | Aphids | 2. | Mosquito |
| 3. | Spider mites | 4. | Nematodes |
Subtopic: Microbes in Biocontrol Agent |
85%
From NCERT
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In contrast to Rhizobium species, Azotobacter species are:
1. lacking nitrogenase
2. free-living, nitrogen-fixing bacteria
3. obligate symbionts
4. Gram-positive bacteria
1. lacking nitrogenase
2. free-living, nitrogen-fixing bacteria
3. obligate symbionts
4. Gram-positive bacteria
Subtopic: Microbes as Biofertilizer |
89%
From NCERT
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Consider the given two statements:
I. Cyclosporin is used as an immunosuppressant medication.
II. It activates the T lymphocytes.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is incorrect but II is correct
4. I is correct but II is incorrect
I. Cyclosporin is used as an immunosuppressant medication.
II. It activates the T lymphocytes.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is incorrect but II is correct
4. I is correct but II is incorrect
Subtopic: Industrial Products, Beverages & Antibiotics |
72%
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