The cell wall of $Nostoc$ is made up of:

The organisms which completely lack a cell wall and can live without oxygen are

Some hyperthermophilic organisms that grow in highly acidic habitats are divided into two groups,which are called:

Cyanobacteria and heterotrophic bacteria have been clubbed together in eubacteria of kingdom-Monera as per the 'five kingdom classification' even though the two are vastly different from each other. Is this grouping of the two types of taxa in the same kingdom justified? If so,why? Discuss the cellular composition of cyanobacteria and heterotrophic bacteria that make them introduced in eubacteria.

Specialized cells for fixing atmospheric nitrogen in $Nostoc$ are

Bacteria lack alternation of generation because there is