In the five-kingdom classification,actinomycetes are included in:

The bacteria growing on a medium and the mass so formed is called:

The elementary cell body in $Mycoplasma$ performs the function of:

Antony van Leeuwenhoek was the first to discover bacteria. He belonged to which country?

When a bacterium is provided with flagella arising from two opposite ends,it is called

Statement $S$: Methanogens are responsible for the production of methane. Statement $R$: They can survive even in acidic and high-temperature conditions.