Which of the following kingdoms consists of multicellular consumers?

Which classification system of organisms was proposed by $R.H. Whittaker$?

In which of the following organisms is the presence of a rigid cell wall observed?

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:

In the $5$-kingdom classification system,which kingdom includes animals?

The stored food in algae and fungi is respectively: