What is the main basis of classification in the Five Kingdom system?

Match Column $X$ with Column $Y$ and select the correct option:

Column $X$	Column $Y$
$(1)$ Nostoc	$(P)$ Filamentous
$(2)$ Chlamydomonas	$(Q)$ Cyanobacteria
$(3)$ Spirogyra	$(R)$ Colonial algae
$(4)$ Volvox	$(S)$ Unicellular algae

$A.$ In bread mold,embryo formation does not occur as a result of sexual reproduction.
$R.$ In bath sponge,the cell wall is made of cellulose.

The three-domain system of classification is based on:

Arrange the following microbes/organisms in ascending order according to their complexity of body (from simple to complex):
$a$ - animal,$b$ - viroids,$c$ - bacteria,$d$ - virus,$e$ - algae.

Auxospores and hormocysts are formed by $.....$ respectively.