Question

State the economically important uses of heterotrophic bacteria.

State two economically important uses of heterotrophic bacteria.

Answer 1

1. Heterotrophic bacteria: include saprotrophic, symbiotic and parasitic bacteria. They act as natural scavengers as they dispose of dead bodies, organic wastes, and raw materials for reutilization. They also help in sewage disposal, manure production, etc. Symbiotic bacteria help in nitrogen fixation.
2. Some bacteria are employed in the production of a number of industrial products, like lactic
   acid, curd, cheese, butter, vinegar, etc.
3. Some bacteria are used in preparation of serum, vaccines, vitamins, enzymes, antibiotics, etc. e.g., Pseudomonas, Xanthomonas, etc