Which one of the following is not a nematode parasite?

Which one of the following is not a living fossil?

Ascaris and Cockroach resemble each other in

Which one of the following pairs of animals are similar to each other pertaining to the feature stated against them?

Which of the following represents the correct combination without any exception?

$Option$	$Characteristics$
$(a)$	$Cyclostomata$: Sucking and circular mouth; jaws absent, integument without scales; paired appendages.
$(b)$	$Aves$: Body covered with feathers; skin moist and glandular, fore-limbs form wings; lungs with air sacs.
$(c)$	$Mammalia$: Mammary gland; hair on body; pinnae; two pairs of limbs.
$(d)$	$Chondrichthyes$: Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord.

Identify the correct terms for the following analogy-based questions:
$(i)$ Porifera : Asymmetrical :: Cnidaria : .........
$(ii)$ Annelida : Coelomate :: Platyhelminthes : ......