Biology · Animal Kingdom
Which of the following taxonomic classes represents the correct combination of characteristics without any exception?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Mouth ventral, gills without operculum; skin with placoid scales; persistent notochord - Class: Chondrichthyes✓
- 2Sucking and circular mouth; jaws absent; integument without scales; paired appendages - Class: Cyclostomata
- 3Body covered with feathers; skin moist and glandular; fore-limbs form wings; lungs with air sacs - Class: Aves
- 4Mammary gland; hair on body; pinnae; two pairs of limbs - Class: Mammalia
Correct answer
Mouth ventral, gills without operculum; skin with placoid scales; persistent notochord - Class: Chondrichthyes
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