11.
For retting of jute the fermenting microbe used is
A
Methophilic bacteria
B
Butyric acid bacteria
C
Helicobactor pylori
D
Streptococcus lactin
Answer :
Butyric acid bacteria
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12.
A biocontrol agent to be a part of an integrated pest management should be
A
Species-specific and inactive on nontarget organisms
B
Species-specific and symbiotic
C
Free living and broad spectrum
D
Narrow spectrum and symbiotic
Answer :
Species-specific and inactive on nontarget organisms
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13.
An organism used as a biofertilizer for raising soyabean crops is
A
Azotobacter
B
Azospirillum
C
Rhizobium
D
Nostoc
Answer :
Rhizobium
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14.
Which one thing is not true about antibiotics?
A
The term "antibiotic" was coined by Selman Waksman in 1942
B
First antibiotic was discovered by Alexander Flemming
C
Each antibiotic is effective only against one particular kind of germ
D
Some persons can be allergic to a particular antibiotic
Answer :
Each antibiotic is effective only against one particular kind of germ
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15.
Farmers have reported over 50% higher yields of rice by using the biofertilizer
A
Azolla pinnata
B
Cyanobacteria
C
Legume-Rhizobium symbiosis
D
Mycorrhiza
Answer :
Azolla pinnata
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16.
A patient brought to a hospital with myocardial infarction is normally immediately given:
A
Penicillin
B
Streptokinase
C
Cyclosporin-$$A$$
D
Statins
Answer :
Streptokinase
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17.
Match the following organisms with the products they produce:
| a. Lactobacillus |
1. Cheese |
| b. Saccharomyces cerevisiae |
2. Curd |
| c. Aspergillus niger |
3. Citric acid |
| d. Acetobacter aceti |
4. Bread |
|
5. Acetic acid |
Select the correct option.
A
a-2, b-4, c-5, d-3
B
a-2, b-4, c-3, d-5
C
a-3, b-4, c-5, d-1
D
a-2, b-1, c-3, d-5
Answer :
a-2, b-4, c-3, d-5
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18.
What gases are produced in anaerobic sludge digesters?
A
Methane and $$CO_2$$ only
B
Methane, Hydrogen Sulphide and $$CO_2$$
C
Methane, Hydrogen Sulphide and $$O_2$$
D
Hydrogen Sulphide and $$CO_2$$
Answer :
Methane, Hydrogen Sulphide and $$CO_2$$
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19.
Which of the following is correctly matched for the product produced by them ?
A
Methanobacterium : Lactic acid
B
Penicillium notatum : Acetic acid
C
Sacchromyces cerevisiae : Ethanol
D
Acetobacter aceti : Antibiotics
Answer :
Sacchromyces cerevisiae : Ethanol
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20.
Yeast is used in the production of
A
Citric acid and lactic acid
B
Lipase and pectinase
C
Bread and beer
D
Cheese and butter
Answer :
Bread and beer
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