Which of the following diseases is caused by a bacteria?

Some plants have nitrogen-fixing bacteria in their root nodules. What are these bacteria called?

Living organisms which are invisible to the naked eye are called _________ .

The bacterium present in curd is:

While baking cakes, yeast reproduces rapidly and produces ___ gas.

used for the production of alcohol and wine.

Which organisms are microscopic and dependent on host organisms for reproduction?

are the agents that act as carriers of a pathogen and spread diseases.

Which one of the following is not a method of food preservation?