Microbes in Human Welfare

Which one of the following is an example of carrying out biological control of pests/diseases using microbes?

1. Trichoderma sp. against certain plant pathogens
2. Ladybird beetle against aphids in mustard
3. Nucleopolyhedrovirus against white rust in Brassica
4. Bt-cotton to increase cotton yield

Yeast is used in the production of

1. Citric acid and lactic acid
2. Lipase and pectinase
3. Bread and beer
4. Cheese and butter

Read the following statement having two blanks (A and B): “A drug used for (A) patients is obtained from a species of the organism (B) .” The one correct option for the two blanks is:

1. A Organ-transplant, B Trichoderma
2. A AIDS, B Pseudomonas
3. A Swine flu, B Monascus
4. A Heart, B Penicillium

Consider the following statements (A-D) about organic farming. Which of these statements are correct?

1. (B) and (C) only
2. (B), (C) and (D)
3. (C) and (D) only
4. (A) and (B) only

Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?

1. Acetobacter aceti – acetic acid
2. Clostridium butylicum – lactic acid
3. Aspergillus niger – citric acid
4. Yeast – statins

The most common substrate used in distilleries for the production of ethanol is :

1. Ground gram
2. Molasses
3. Soyabean
4. Corn meal

Which one of the following is not a biofertilizer ?

1. Agrobacterium
2. Nostoc
3. Rhizobium
4. Mycorrhiza

Secondary sewage treatment is mainly a :

1. Mechanical process
2. Chemical process
3. Biological process
4. Physical process

Which of the following is mainly produced by the activity of anaerobic bacteria on sewage ?

1. Propane
2. Mustard gas
3. Marsh gas
4. Laughing gas

An organism used as a Biofertilizer for raising soyabean crop is :

1. Azotobacter
2. Azospirillum
3. Nostoc
4. Rhizobium