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Class 12 Biology
Microbes In Human Welfare
Quiz 1
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Bacillus thuringiensis (Bt) strains have been used for designing novel:
0%
Bio-metallurigcal techniques
0%
Bio-mineralization process
0%
Bio-insecticidal plants
0%
Bio-fertilizers
Explanation
Bio-insecticidal plants
Streptococcus is used in the preparation of:
0%
Wine
0%
Idli
0%
Paneer
0%
Bread
Explanation
Paneer
Nif gene occurs in:
0%
Peiiicillium
0%
Rhizobium
0%
Aspergillus
0%
Streptococcus
Explanation
Rhizobium
Azoila has symbiotic relationship with:
0%
Chlotfila
0%
Anabaena
0%
Nostoc
0%
Tolypothrix
Explanation
Anabaena
Term antibiotic was first used by :
0%
Flemming
0%
Pasteur
0%
Waksman
0%
Lister
Explanation
Waksman
A free living anaerobic nitrogen fixing bacterium is:
0%
Rhizobium
0%
Streptococcus
0%
Azotobactor
0%
Clostridium
Explanation
Clostridium
Citric acid is produced by:
0%
Rhizopus
0%
Mucor
0%
Aspergillus
0%
Saccharomyces
Explanation
Rhizopus
In nostoc, enzyme nitrogenase occurs in :
0%
Vegetative cells
0%
Heterocysts
0%
Both (a) and (b)
0%
Only in hormogones
Explanation
Both (a) and (b)
Usnic acid is an antibiotic obtained from :
0%
Fungi
0%
Bacteria
0%
Lichens
0%
Algae
Explanation
Lichens
By anobacteria are useful biofertilizers in the; field of:
0%
Wheat
0%
Maize
0%
Rice
0%
Sugarcane
Explanation
Rice
Streptomycin is produced by:
0%
By Streptomyces Scoleus
0%
By Streptomyces fradiae
0%
By Streptomyces venezueleae
0%
By Streptomyces griseus
Explanation
By Streptomyces griseus
Antibiotics are:
0%
Medicines
0%
Toxin
0%
Plants
0%
Syrups
Explanation
Medicines
A free-living aerobic and non-photosynthetic nitrogen fixing bacterium is:
0%
Anabaena
0%
Clostridium
0%
Azotobactor
0%
Rhizobium
Explanation
Azotobactor
For retting of jute, the fermenting microbe is:
0%
Methanophilic bacteria
0%
Butyric acid bacteria
0%
Helicobactor pylon
0%
Streptococcus lactin
Explanation
Butyric acid bacteria
0 h : 0 m : 1 s
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