Match the following:

$(a)$ Operculum	$(i)$ Ctenophora
$(b)$ Parapodia	$(ii)$ Mollusca
$(c)$ Scales	$(iii)$ Porifera
$(d)$ Comb plates	$(iv)$ Reptilia
$(e)$ Radula	$(v)$ Annelida
$(f)$ Hairs	$(vi)$ Cyclostomata and Chondrichthyes
$(g)$ Choanocytes	$(vii)$ Mammalia
$(h)$ Gill slits	$(viii)$ Osteichthyes

Match the following:

List-$I$	List-$II$
$(a)$ Physalia	$(i)$ Pearl oyster
$(b)$ Limulus	$(ii)$ Portuguese Man of War
$(c)$ Ancylostoma	$(iii)$ Living fossil
$(d)$ Pinctada	$(iv)$ Hookworm

Choose the correct answer from the options given below.

Trochophore larva is found in

Read the following statements and find out the correct statement.
$a$. Urinary bladder is absent in fishes
$b$. Gambusia fish eradicates mosquito larva
$c$. Ampulla of Lorenzini present in dogfish act as thermoreceptors
$d$. Electric organs are modified muscles

Which of the following is unrelated to the others?

$S$ 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.