Natural system of classification was developed by

Match column-$I$ (Kingdom) with column-$II$ (Class) and select the correct option.

Column-$I$ (Kingdom)	Column-$II$ (Class)
$A$. Plantae	$I$. Archaebacteria
$B$. Fungi	$II$. Euglenoids
$C$. Protista	$III$. Phycomycetes
$D$. Monera	$IV$. Algae

Biological classification is a dynamic and ever-evolving phenomenon which keeps changing with our understanding of life forms. Justify the statement by taking any two examples.

Which of the following statements is correct?

Select the correct match for $X$ and $Y$:

Column $X$	Column $Y$
$(1)$ Unicellular bacteria	$(P)$ Chlamydomonas
$(2)$ Unicellular algae	$(Q)$ Yeast
$(3)$ Unicellular fungi	$(R)$ Euglena
$(4)$ Unicellular protozoa	$(S)$ Bacillus

Which of the following is a true characteristic of the Kingdom Plantae?