Which of the following groups of algae does not have eukaryotic organization?

The given characters are seen in which of the following group?
$(i)$ Unicellular,colonial,filamentous,symbiotic or free living.
$(ii)$ The colonies are surrounded by a gelatinous sheath.
$(iii)$ Some can fix atmospheric nitrogen in specialized cells called heterocysts.
$(iv)$ They often form blooms in water bodies.

Which of the following is $NOT$ a shape of bacteria?

Organisms that obtain energy by the oxidation of reduced inorganic compounds are called .....

What is the genetic material of Cyanobacteria known as?

The outermost limiting layer of $Mycoplasma$ is made up of