Microbes in Human Welfare · Question 4

Which of the following organisms cannot fix nitrogen? Choose the correct answer from the options given below:

1. B only
2. E only
3. A only
4. D only

Streptokinase produced by bacterium Streptococcus is used for

1. Liver disease treatment
2. Removing clots from blood vessels
3. Curd production
4. Ethanol production

Which of the following microbes is NOT involved in the preparation of household products? Choose the correct answer from the options given below:

1. C and D only
2. C and E only
3. A and B only
4. A and C only

Match List I with List II Choose the correct answer from the options given below:

1. A-III, B-I, C-II, D-IV
2. A-II, B-IV, C-III, D-I
3. A-III, B-I, C-IV, D-II
4. A-IV, B-I, C-III, D-II

Match List-I with List-II relating to microbes and their products: Choose the correct answer from the options given below:

1. A-II, B-III, C-IV, D-I
2. A-I, B-II, C-III, D-IV
3. A-I, B-III, C-II, D-IV
4. A-I, B-IV, C-II, D-III

Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A :

1. Trichoderma polysporum
2. Clostridium butylicum
3. Aspergillus niger
4. Streptococcus cerevisiae

Match List-I with List-II Choose the correct answer from the options given below

1. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
2. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
3. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
4. (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)

Which of the following is put into Anaerobic sludge digester for further sewage treatment?

1. Effluents of primary treatment
2. Primary sludge
3. Floating debris
4. Activated sludge

Match the following columns and select the correct option.

1. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
2. (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
3. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
4. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

Select the correct group of biocontrol agents.

1. Oscillatoria, Rhizobium, Trichoderma
2. Nostoc, Azospirillum, Nucleopolyhedrovirus
3. Bacillus thuringiensis, Tobacco mosaic virus, Aphids
4. Trichoderma, Baculovirus, Bacillus thuringiensis