Reptiles are different from amphibians in

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

Column $X$	Column $Y$
$(1)$ Platyhelminthes	$(P)$ Malpighian tubules
$(2)$ Aschelminthes	$(Q)$ Nephridia
$(3)$ Arthropoda	$(R)$ Flame cells
$(4)$ Annelida	$(S)$ Renette cells

$A$: Annelids,arthropods,and molluscs are protostomial coelomates.
$R$: All three phyla include members with bilateral symmetry and a true coelom.

All of the following are marine fish except,

Metamerism is a characteristic feature of which of the following?

Fill in the blank spaces appropriately in the table below:

Phylum/Class	Excretory organ	Circulatory system	Respiratory organ
Arthropoda	$...............$	$...............$	Lungs/Gills/Tracheal system
$...............$	Nephridia	Closed	Skin/Parapodia
$...............$	Metanephridia	Open	$...............$
Amphibia	$...............$	Closed	Lung