1How do decomposer bacteria make the soil fertile? Name three decomposer bacteria.
2Where is Rhizobium found and what work does it do?
3What is fermentation? Where is it put to use?
4How does food poisoning happen, and what are its signs?
5What should be done when a sore has become infected and is festering?
6Write about the usefulness of the bacteriophage virus.
7Why is a virus described as a bridge between life and lifeless matter?
8What harm do microorganisms do to stored goods and to the environment?
9Which products of medical science are made with the help of microorganisms?
10Which bacteria help in making curd and cheese?