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

1 2015 AIPMT-I Animal KingdomClassification of chordates Medium
Which of the following represents the correct combination without any exception?
A Mammary gland; hair on body; pinnae; two pairs of limbs – Mammalia
B Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord – Chondrichthyes
C Sucking and circular mouth; jaws absent; integument without scales; paired appendages – Cyclostomata
D Body covered with feathers; skin moist and glandular; forelimbs form wings; lungs with air sacs – Aves

Detailed Solution

Chondrichthyes: ventral mouth, gills without operculum, placoid scales and persistent notochord — correct without exception.
Mammalia: whales lack pinnae.
Cyclostomata: paired appendages are absent.
Aves: skin is dry and without glands (except the oil gland).

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