Who proposed the natural classification of plants?

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.

Match the Column-$I$ and Column-$II$:

Column-$I$	Column-$II$
$(i)$ Chrysophyta	$(a)$ Fungi
$(ii)$ Gonyaulax	$(b)$ Diatom
$(iii)$ Penicillium	$(c)$ Plasmodium
$(iv)$ Slime mould	$(d)$ Dinoflagellate

Who among the following did not propose a system of classification?

Into how many kingdoms is the domain Eukarya divided?

Plants are autotrophic. Can you think of some plants that are partially heterotrophic?