Home › AP EAMCET › Biology › Zoology Unit 4: Animal Diversity-II: Phylum Chordata › Which vertebrate class has a completely four-cha…
Which vertebrate class has a completely four-chambered heart and feathers?
AAves
BReptilia
CAmphibia
DMammalia
Answer & Solution
Correct answer: A. Aves
Birds alone have feathers and a completely four-chambered heart.
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