Rising of dough is due to

1. multiplication of yeast           
2. production of CO₂
3. emulsification                       
4. hydrolysis of wheat flour starch into sugars

A major component of gobar gas is:

Which one produces gas by decomposing the gobar (Dung) in gobar gas:
1.  Fungus
2.  Virus
3.  Methanogenic bacteria
4.  Algae

Select the correct group of biocontrol agents:

Match the following list of microbes and their importance:

1. a(iii), b(i), c(iv), d(ii)

2. a(iii), b(iv), c(i), d(ii)

3. a(iv), b(iii), c(ii), d(i)

4. a(iv), b(ii), c(i), d(iii)

_______ enzyme is used to remove clots from the blood vessels of patients who have undergone _______leading to heart attack.

Identify the colonies labelled as A and B.

1. A-Fungal; B-Bacterial

2. A-Bacterial; B-Fungal

3. A-Algal; B-Viral

4. A-Fungal; B-Algal

Among the following pairs of microbes, which pair has both the microbes that can be used as biofertilizers ?

1. Aspergillus and Rhizopus

2. Rhizobium and Rhizopus

3. Cyanobacteria and Rhizobium

4. Aspergillus and Cyanobacteria

Which of the following statements about methanogens is not correct?

Bacteria responsible for gobar gas formation are