The latest classification of biological kingdoms was proposed by

The series Disciflorae consists of .........

Select the correct combination of the statements $(i-iv)$ regarding the characteristics of certain organisms.
$(i)$ Methanogens are archaebacteria which produce methane in marshy areas.
$(ii)$ Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen.
$(iii)$ Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
$(iv)$ Mycoplasma lack a cell wall and can survive without oxygen.
The correct statements are:

Statement $A$: Whittaker placed fungi in a separate kingdom from Protista.
Reason $R$: The cell wall of fungi is composed of fungal-cellulose (chitin).
Which option is correct for Statement $A$ and Reason $R$?

Most of the unicellular organisms are kept under

Which of the following pairs is not correctly matched?