What is the nutritional mode of $Nitrosomonas$,$Nitrococcus$,and $Nitrobacter$ bacteria?

Find out the incorrect statement in the following $:-$

In prokaryotes,the photosynthetic lamellae remain in:

Assertion $A$: Bacillus and Coccus types of bacteria are found in colonial forms.
Reason $R$: In bacteria,cells formed by cell division remain surrounded by a secreted mucilaginous substance.
Which option is correct for Assertion $A$ and Reason $R$?

Bacteria are considered primitive organisms because they

Biochemical resemblance is generally used for the identification of which group of individuals?