Match the following columns:

Column-$I$	Column-$II$
$(a)$ Gill slits open	$(i)$ Lamprey
$(b)$ Absence of paired fins	$(ii)$ Scorpion
$(c)$ Calcareous shell	$(iii)$ Wuchereria
$(d)$ Absence of flame cells	$(iv)$ Oyster
$(e)$ Ecdysis	$(v)$ Shark

$S$ Statement: Aquatic life,gills,fins,and scales are characteristics of the fish group.
$R$ Reason: External ear (pinna) and hair on the body are characteristics of the mammalian group.
$(a)$ Both $S$ and $R$ are true,$R$ is the correct explanation of $S$.
$(b)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(c)$ $S$ is true and $R$ is false.
$(d)$ $S$ is false and $R$ is true.
$(e)$ Both $S$ and $R$ are false.

In which of the following sets,are the groups not correctly matched phylum-wise?

Identify the organism that is different from others based on the presence of a coelom.

Which of the following is a correctly matched pair?

Animals exhibiting radial symmetry are found in: