Q. No.Select the correct statement from the following:
1. Biogas commonly called gobar gas is pure methane
2. Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
3. Biogas is produced by the activity of aerobic bacteria on animal waste
4. Methanobacterium is an aerobic bacterium found in rumen of cattle
1. Biogas commonly called gobar gas is pure methane
2. Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
3. Biogas is produced by the activity of aerobic bacteria on animal waste
4. Methanobacterium is an aerobic bacterium found in rumen of cattle
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A common biocontrol agent for the control of plant diseases is
1. Trichoderma
2. Baculovirus
3. Bacillus thuringiensis
4. Glomus
The common nitrogen fixer in paddy fields is:
| 1. | Frankia | 2. | Rhizobium |
| 3. | Azospirillum | 4. | Oscillatoria |
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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The most common substrate used in distilleries for the production of ethanol is
1. Molasses
2. Corn meal
3. Soya meal
4. Ground gram
Ethanol is commercially produced through a particular species of
1. Aspergillus
2. Saccharomyces
3. Clostridium
4. Trichoderma
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Which one of the following is not a biofertilizer?
1. Mycorrhiza
2. Agrobacterium
3. Rhizobium
4. Nostoc
An organism used as biofertilizer for raising soyabean crop is
1. Nostoc
2. Azotobacter
3. Azospirillum
4. Rhizobium
Which one of the following helps in the absorption of phosphorus from soil by plants?
1. Anabaena
2. Glomus
3. Rhizobium
4. Frankia
Read the following statement having two blanks (A and B):
“A drug used for _______ (A) ________ patients is obtained from a species of the organism _________ (B) _________.”
The one correct option for the two blanks is:
|
Blank-A |
Blank-B |
|
|
1 |
AIDS |
Pseudomonas |
|
2 |
Heart |
Penicillium |
|
3 |
Organ-transplant |
Trichoderma |
|
4 |
Swine flu |
Monascus |
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