Question

Big holes in Swiss cheese are made by a:
a. a machine
b. a bacterium that produces methane gas
c. a bacterium producing a large amount of carbon dioxide
d. a fungus that releases a lot of gases during its metabolic activities.


NCERT Class XII
Biology - Main Course Book

Chapter 10. Microbes in Human Welfare

Answer 1

c) bacteria producing a large amount of carbon dioxide

Answer 2

Big holes in Swiss cheese are made by (c) a bacterium producing a large amount of carbon dioxide . So , Option (c) is correct .