Which one is the most important role of microorganisms for the well being of humans?</h2></div>

Sausages are fermented</h2></div>

Which of the following is not true for a biogas plant?

Which of the following is widely used as a successful biofertiliser in Indian rice fields?</h2></div>

Which of the following in sewage treatment removes suspended solids?</h2></div>

If the nitrogenase enzyme has been inactivated by radiation, there will be no _________.</h2></div>

Write two advantages of Blue-green algae in farming.</h2></div>

Which of the following is the examples of biofertilizers?</h2></div>