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Microbes in Human Welfare Questions for NEET. We covered all the Microbes in Human Welfare Questions for NEET in this post for free so that you can practice well for the exam.
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mcq on Microbes in Human Welfare Questions for NEET Students
Which of the following represents a traditional method of crop improvement?
a) Mutation breeding
b) Hybridisation
c) Somaclonal variation
d) Genetic engineering
Option b – Hybridisation
A group of animals sharing common ancestry and having similar physical traits is known as a
a) Herd
b) Breed
c) Stock
d) Floc
Option b – Breed
Which crop variety, known for resistance to yellow mosaic virus, was developed using mutation breeding?
a) Mung bean variety resistant to yellow mosaic virus
b) Cowpea variety resistant to bacterial blight
c) Brassica variety resistant to white rust
d) Wheat variety resistant to leaf and stripe rust
Option a – Mung bean variety resistant to yellow mosaic virus
Which microbial species, commonly found in the rhizosphere, is used to combat plant pathogens?
a) Trichoderma
b) Nucleopolyhedrovirus
c) Bacillus thuringiensis
d) Monascus purpureus
Option a – Trichoderma
Plant breeding to improve nutritional value does NOT aim to
a) Enhance protein quantity and quality
b) Improve resistance to environmental conditions
c) Boost vitamin levels
d) Increase mineral content
Option b – Improve resistance to environmental conditions
Which among the following is NOT a fungus used for human benefit?
a) Aspergillus niger
b) Monascus purpureus
c) Clostridium butylicum
d) Trichoderma polysporum
Option c – Clostridium butylicum
Which microbe converts milk into curd by fermentation?
a) Propionibacterium shermanii
b) Lactobacillus
c) Saccharomyces cerevisiae
d) Aspergillus
Option b – Lactobacillus
The discovery and antibiotic nature of Penicillin was confirmed by
a) Alexander Fleming
b) Ernest Chain
c) Howard Florey
d) All of the above
Option d – All of the above
Read the statements and select the correct answer:
Statement I: MOET Technology is successfully applied to improve livestock.
Statement II: Artificial insemination often results in lower success rates of conception.
a) Only Statement I is correct
b) Only Statement II is correct
c) Both statements are correct
d) Both statements are incorrect
Option c – Both statements are correct
The bhindi variety that became resistant to yellow mosaic virus is
a) Pusa Sem 2
b) Pusa Gaurav
c) Parbhani Kranti
d) Karan Rai
Option c – Parbhani Kranti
In sewage treatment, what is the term for bacterial masses linked with fungal threads that begin decomposition?
a) Inoculum
b) Starter
c) Floc
d) Stock
Option c – Floc
Read the statements and choose the correct one:
Statement I: Atlas 66 was used to raise the protein content in maize.
Statement II: Iron-rich rice varieties can have up to five times more iron than normal rice.
a) Only Statement I is correct
b) Only Statement II is correct
c) Both statements are correct
d) Both statements are incorrect
Option b – Only Statement II is correct
Methylophilus methylotrophus is capable of generating how much protein per day from 250 g of biomass?
a) 25 tonnes
b) 250 grams
c) 200 grams
d) 20 tonnes
Option a – 25 tonnes
Which of the following offers genes for pest resistance in crops?
a) Cultivated crop varieties
b) Gene banks
c) Wild plant relatives
d) All of the above
Option d – All of the above
Which statement about artificial insemination is incorrect?
a) Semen samples can be preserved and transported
b) The likelihood of conception is high
c) Semen from aged or injured bulls cannot be utilized
d) Each breeder doesn’t need to keep a bull
Option c – Semen from aged or injured bulls cannot be utilized
Enzymes used to clarify fruit juices include
a) Lipase
b) Pectinase
c) Protease
d) Both pectinase and protease
Option d – Both pectinase and protease
Controlled reproduction in animals is achieved using
a) Interspecific hybridization
b) Cross-breeding
c) Artificial insemination
d) Out-crossing
Option c – Artificial insemination
Which microbe is an important nitrogen-fixer in rice fields?
a) Aspergillus
b) Staphylococcus
c) Cyanobacteria
d) Trichoderma
Option c – Cyanobacteria
Complete the analogy:
Viral Disease — Tobacco mosaic :: Bacterial Disease — ?
a) Brown rust of wheat
b) Black rot of crucifers
c) Red rot of sugarcane
d) Late blight of potato
Option b – Black rot of crucifers
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