Q. No.
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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 |
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Which of the following human diseases cannot be treated by antibiotics?
| 1. | Plague | 2. | Diphtheria |
| 3. | Leprosy | 4. | Mumps |
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In the secondary treatment or biological treatment of sewage water, the primary effluent is passed into large aeration tanks where it is constantly agitated mechanically and the air is pumped into it. This allows:
1. vigorous growth of useful aerobic microbes into flocs
2. the decrease in the number of aerobes in the water
3. rapid increase in the count of methanogens
4. a dramatic decrease in the anaerobic methanogens
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The part of the complex stomach of ruminants that has methanogens present is the:
| 1. | Omassum | 2. | Abomasum |
| 3. | Rumen | 4. | Reticulum |
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The major problem with the use of chemicals to control plant diseases and pests is:
1. High cost
2. Ineffectivity against most pathogens
3. Difficulty in production
4. Non-specific nature
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Match each item in Column I [Diazotroph] with the feature in Column II and select the correct answer from the codes given below:
|
|
COLUMN I |
|
COLUMN II |
|
A. |
Cyanobacteria |
a. |
Actinorhizal symbiont |
|
B. |
Frankia |
b. |
Do not form nodules |
|
C. |
Rhizobium |
c. |
Free-living nitrogen fixer |
|
D. |
Azotobacter |
d. |
Legume symbiont |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | c | d |
| 3. | a | b | d | c |
| 4. | b | a | d | c |
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What advantage does the mycobiont get in the mycorrhizal symbiotic relationship?
1. Adequate uptake of water
2. More availability of minerals like phosphorus
3. Availability of carbohydrates for energy
4. Resistance to diseases, drought, and salinity
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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 |
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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
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