NEET questions (MCQS) on Microbes In Human Welfare | Solve important NEET MCQs on Microbes In Human Welfare with scores and solutions | Test No. 03
Microbes in Human Welfare: MCQs Quiz - 3
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Question 1 |
A nitrogen fixing microbe associated with Azolla in rice fields is
Frankia | |
Tolypothrix | |
Spirulina | |
Anabaena |
Question 2 |
Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?
Glomus | |
Trichoderma | |
Azotobacter | |
Aspergillus |
Question 3 |
A patient brought to a hospital with myocardial infarction is normally immediately given
Cyclosporin–A | |
Statins | |
Penicillin | |
Streptokinase |
Question 4 |
The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorized as
Chemosynthetic autotrophs | |
Heterotrophic bacteria | |
Cyanobacteria | |
Archaebacteria |
Question 5 |
Monascus purpureus is a yeast used commercially in the production of
Citric acid | |
Blood cholesterol lowering statins | |
Ethanol | |
Streptokinase for removing clots from the blood vessels |
Question 6 |
Two microbes found to be very useful in genetic engineering are
Diplococcus sp. and Pseudomonas sp. | |
Vibrio cholerae and a tailed bacteriophage | |
Escherichia coli and Agrobacterium tumefaciens | |
Crown gall bacterium and Caenorhabditis elegans |
Question 7 |
Which one of the following plant is commonly used as green manure?
Cassia fistula | |
Acacia nilotica | |
Dalbergia sissoo | |
Crotalaria juncea |
Question 8 |
Rotenone is
A bioherbicide | |
A natural insecticide | |
An insect hormone | |
A natural herbicide |
Question 9 |
The biological control of agricultural pests, unlike chemical control is
Very expensive | |
Polluting | |
Self perpetuating | |
Toxic |
Question 10 |
Azolla is used as a biofertilizer because it
Has association of nitrogen fixing Cyanobacteria | |
Has association of nitrogen fixing Rhizobium | |
Multiplies very fast to produce massive biomass | |
Has association of mycorrhiza |
Question 11 |
Green manure plants used by farmer mainly belong to
Solanaceae | |
Leguminosae | |
Compositae | |
Poaceae |
Question 12 |
Yeast is used in the production of
Bread and beer | |
Cheese and butter | |
Citric acid and lactic acid | |
Lipase and pectinase |
Question 13 |
Which of the following microbes is used for commercial production of ethanol?
Trichoderma polysporum | |
Streptococcus | |
Clostridium butylicum | |
Saccharomyces cerevisiae |
Question 14 |
A sewage treatment process in which a part of decomposer bacteria present in the wastes is recycled into the starting of the process is called
Primary treatment | |
Activated sludge treatment | |
Cyclic treatment | |
Tertiary treatment |
Question 15 |
Crop rotation is used by farmers to increase
Organic content of soil | |
Nitrogenous content of soil | |
Soil fertility | |
All of these |
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