One of the major components of the bacterial cell wall is a polymer called:

According to Bradley and Carr,the nitrogen fixation takes place in

Identify the incorrect option regarding Cyanobacteria.

Which of the following prokaryotes are most abundant in nature and are helpful in making curd from milk and in the production of antibiotics?

$A$ single filament of $Nostoc$ without the mucilage sheath is known as:

Which one of the following is a prokaryote?