Free Online Biology Entrance Exam Resources

Multiple Choice Questions on Microbes in Human Welfare

1. Antibiotics mostly obtained from
a) algae
b) fungi
c) actinomycetes
d) both b and c
2. From which microorganism streptomycin is prepared?
a) Sterptomyces ramous
b) Sterptomyces antibiotics
c) Sterptomyces nodosus
d) Sterptomyces griseus
3. The free living fungus used as a biological control against several fungal pathogen of plants
a) Trichoderma
b) Pencillium
c) Frankia
d) Saccharomyces
4. Method of controlling pest that relies on natural predation rather than introduced chemical
a) Predation
b) Chemical control
c) Biological control
d) None of these
5. The excreta of cattle, commonly called ‘gobar’ is rich in
a) Methanobacterium
b) Pseudomonas putida
c) Rhizobium
d) Bacillus species
6. The bacteria that grow on milk and convert it to curd
a) Clostridium
b) Lactobacillus
c) Nitosomonas
d) Acetobacter
7. Streptokinase used as a ‘clot buster’ for removing clots from blood vessels of patients who have undergone myocardial infraction infection leading to heart attack. It is obtained from
a) Streptobacillus
b) Saccharomyces
c) Thiobacillus
d) Sreptococci

8. ----- serves as an important biofertlizer in paddy field
a) Cyanobacteria
b) Clostridium
c) Mycorrhiza
d) Frankia
9. The microbe that used in control of oil spills
Clean-up crews use the Pseudomonas putida bacteria (inset) to decontaminate soil polluted by oil spills
a) Methanobacterium
b) Pseudomonas putida
c) Rhizobium
d) Bacillus thuringiensis
10. Biogas can be good substitute for
a) fuel wood
b) coal
c) charcol
d) oil and petrol
Learn more:
1. d) both b and c
2. d) Sterptomyces griseus
3. a) Trichoderma
4. c) Biological control
5. a) Methanobacterium
6. b) Lactobacillus
7. d) Sreptococci
8. a) Cyanobacteria
9. b) Pseudomonas putida
10. a) fuel wood


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