Which organisms possess a contractile vacuole as a specialized organelle for osmoregulation?

In which of the following,the cell wall is composed of cellulose or fungal-cellulose?

Each of the following characteristics represents a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization.
$A.$ Multicellular heterotrophs with cell wall made of chitin.
$B.$ Heterotrophs with tissue/organ/organ system level of body organization.
$C.$ Prokaryotes with cell wall made of polysaccharides and amino acids.
$D.$ Eukaryotic autotrophs with tissue/organ level of body organization.
$E.$ Eukaryotes with cellular body organization.

$A$ filament of an alga can be differentiated from that of a fungus by

In the three-domain system of classification,into which domains are prokaryotic and eukaryotic organisms divided?

The stored food in algae and fungi is respectively: