FIRST SESSIONAL EXAM
Microbes in Human Welfare
MM: 40 Time: _ hours
Section A
Q.1 Attempt all the following parts:
Multiple Choice Questions (40x1=40)
1. Bt toxin is produced by which bacteria? :
a) Bacillus vulgaris b) Bacillus thuringiensis
c) Bacillus subtilis d) Bacillus megatherium
2. Zymase enzyme is obtained from :
a) Saccharomyces cerevisiae b) Streptococcus lactis
c) Aspergillus oryzae d) Rhodotorula gracilis
3. Which has an important role in phosphate nutrition of plants? :
a) VAM b) IPM c) Legumes d) Cyanobacteria
4. Which organism does not have the ability to fix atmospheric nitrogen? :
a) Nostoc b) Ulothrix c) Rhizobium d) Azotobacter
5. The organisms which bring about nutrient enrichment are called :
a) biofertilizers
b) biopesticides
c) slime moulds
d) Lichens
6. A symbiotic relationship between fungal hyphae and roots of
Higher plants is known as :
a) Rhizobium b) Mycorrhiza c) Lichens d) nodules
7. Ergot, used for pharmaceutical reasons is prepared from the fungus :
, a) mushrooms b) moulds
c) Saccharomyces cerevisiae d) Claviceps purpurea
8. Removal of stamen heads before the pollen burst is called :
a) incision b) splicing c) emasculation d) harvesting
9. Hybrid vigour can be maintained for long periods by :
a) clonal selection b) plant breeding
c) tissue culture d) biotechnology
10. Mention the algae added to paddy fields as fertilizer :
a) Blue-green algae
b) Green algae
c) Brown algae
d) Red algae
11. The organism introduced into drains and ponds
as mosquito-control agent is :
a) Nostoc b) Anabaena c) Chlorella d) Gambusa
12. Biogas is formed from cow dung by microbes like :
a) Nitrosomonas b) Nitrobacter c) Methanogens d) Rhizobium
13. The fungi that forms mycorrhizal association with plants is :
a) Glomus b) Rhizobium
c) Moulds d) Mushrooms
14. The main source of biofertilizers are :
a) Rhizobium b) Azospirillum
c) Frankia d) all the above
15.The microbe to control insect larvae on cotton is :
a) Bacillus thuringiensis b) Trichoderma spp.
c) Rhizobium d) all the above
Microbes in Human Welfare
MM: 40 Time: _ hours
Section A
Q.1 Attempt all the following parts:
Multiple Choice Questions (40x1=40)
1. Bt toxin is produced by which bacteria? :
a) Bacillus vulgaris b) Bacillus thuringiensis
c) Bacillus subtilis d) Bacillus megatherium
2. Zymase enzyme is obtained from :
a) Saccharomyces cerevisiae b) Streptococcus lactis
c) Aspergillus oryzae d) Rhodotorula gracilis
3. Which has an important role in phosphate nutrition of plants? :
a) VAM b) IPM c) Legumes d) Cyanobacteria
4. Which organism does not have the ability to fix atmospheric nitrogen? :
a) Nostoc b) Ulothrix c) Rhizobium d) Azotobacter
5. The organisms which bring about nutrient enrichment are called :
a) biofertilizers
b) biopesticides
c) slime moulds
d) Lichens
6. A symbiotic relationship between fungal hyphae and roots of
Higher plants is known as :
a) Rhizobium b) Mycorrhiza c) Lichens d) nodules
7. Ergot, used for pharmaceutical reasons is prepared from the fungus :
, a) mushrooms b) moulds
c) Saccharomyces cerevisiae d) Claviceps purpurea
8. Removal of stamen heads before the pollen burst is called :
a) incision b) splicing c) emasculation d) harvesting
9. Hybrid vigour can be maintained for long periods by :
a) clonal selection b) plant breeding
c) tissue culture d) biotechnology
10. Mention the algae added to paddy fields as fertilizer :
a) Blue-green algae
b) Green algae
c) Brown algae
d) Red algae
11. The organism introduced into drains and ponds
as mosquito-control agent is :
a) Nostoc b) Anabaena c) Chlorella d) Gambusa
12. Biogas is formed from cow dung by microbes like :
a) Nitrosomonas b) Nitrobacter c) Methanogens d) Rhizobium
13. The fungi that forms mycorrhizal association with plants is :
a) Glomus b) Rhizobium
c) Moulds d) Mushrooms
14. The main source of biofertilizers are :
a) Rhizobium b) Azospirillum
c) Frankia d) all the above
15.The microbe to control insect larvae on cotton is :
a) Bacillus thuringiensis b) Trichoderma spp.
c) Rhizobium d) all the above
