- A Reptilia
- B Aves
- C Mammalia
- D Amphibia
Correct answer: B. Aves
Explanation: Class Aves (birds) is uniquely characterized by the presence of feathers and forelimbs modified into wings.
Concept context
Phylum-level classification of the animal kingdom from Porifera to Chordata, based on body symmetry, coelom, and segmentation. One of the most example-heavy chapters for NEET.