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Microbes in Human Welfare mcq. We covered all the Microbes in Human Welfare mcq in this post for free so that you can practice well for the exam.
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mcq on Microbes in Human Welfare for NEET Students
In cattle breeding programs, a buffalo selected for inbreeding is expected to
a) produce superior offspring
b) yield more milk per lactation
c) exhibit greater Disease resistance
d) have lean meat with minimal fat
Option b – yield more milk per lactation
Which alcoholic drink is created without undergoing the distillation process?
a) Wine
b) Brandy
c) Whisky
d) Rum
Option a – Wine
What changes occur during the transformation of milk into curd?
a) Milk proteins coagulate
b) Lactic Acid is produced
c) Vitamin B12 levels increase
d) All of the above
Option d – All of the above
Identify the incorrect statement regarding methanogenic microbes:
a) These microbes are found in cattle dung
b) Methanobacterium grows in oxygen-rich conditions and produces CH₄, CO₂, and H₂
c) Methylophilus methylotrophus is used to produce single-cell protein
d) Methanogens break down sludge during sewage treatment to generate biogas
Option d – Methanogens break down sludge during sewage treatment to generate biogas
Analyze the statements and choose the right option:
Statement I: Biogas plants have an outlet pipe that distributes gas to nearby households.
Statement II: Used slurry is introduced into the plant through an inlet linked to the tank.
a) Only Statement I is correct
b) Only Statement II is correct
c) Both statements are correct
d) Both statements are incorrect
Option a – Only Statement I is correct
Placing beehives in agricultural fields during blooming season helps in
a) enhancing honey output
b) improving crop production
c) promoting pollination
d) all of the above
Option d – all of the above
Which of the following is NOT a use of apiculture products?
a) Furniture polish
b) Medicine production
c) Cosmetic industry
d) Oil manufacturing
Option d – Oil manufacturing
The fermentation process in idli dough causes it to puff up due to
a) ethanol production
b) carbon dioxide release
c) butyric Acid formation
d) lactic Acid formation
Option b – carbon dioxide release
Which feature is not introduced in crops to aid plant breeding?
a) Better resistance to insect pests
b) Higher yield
c) Better pollination efficiency
d) Tolerance to environmental stresses
Option c – Better pollination efficiency
Analyze the statements below and choose the correct answer:
Statement I: Wastewater is treated with heterotrophic microbes before it is released.
Statement II: High biological oxygen demand means the water is safer to discharge.
a) Only Statement I is correct
b) Only Statement II is correct
c) Both statements are correct
d) Both statements are incorrect
Option a – Only Statement I is correct
To regenerate virus-free plants, which tissue is cultured in vitro?
a) Stem
b) Meristem
c) Leaves
d) Flowers
Option b – Meristem
Which of the following does not belong to biological/secondary sewage treatment?
b) Effluent from primary treatment
c) Activated sludge
d) Flocs
Which organism functions as a fungal biofertilizer?
a) Oscillatoria
b) Glomus
c) Rhizobium
d) Nostoc
Option b – Glomus
Which cauliflower type is resistant to black rot?
a) Pusa Shubhra
b) Pusa Swarnim
c) Pusa Komal
d) Pusa Sadabahar
Option a – Pusa Shubhra
Enhancing the nutritional profile of crops is known as
a) Micropropagation
b) Biofortification
c) Mutation breeding
d) Somatic hybridization
Option b – Biofortification
Which of the following statements about Baculoviruses is incorrect?
a) They are pathogenic
b) They serve as effective biological control agents
c) Trichoderma is a Baculovirus
d) They function in a host-specific manner
Option c – Trichoderma is a Baculovirus
Read and identify the correct statement:
Statement I: Alexander Fleming was studying Staphylococcus bacteria when he found penicillin.
Statement II: Penicillin is an antibiotic derived from Penicillium notatum.
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
Which of the following is a product of cross-breeding?
a) Merino rams
b) Hissardale sheep
c) Bikaneri ewes
d) Mule
Option b – Hissardale sheep
Why is germplasm evaluation important?
a) To find Disease-resistant variants
b) To breed improved crop varieties
c) To select desirable traits
d) All of the above
Option d – All of the above
The semi-dwarf wheat variety developed by Norman Borlaug is known as
a) Sonalika
b) Kalyan Sona
c) Semi-dwarf wheat
d) Ratna
Option c – Semi-dwarf wheat
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