AP BIOLOGY

Detailed explanation-1: -Aves is the bird class. It is a class that includes living species evolved from reptiles, not mammals. However, they have adapted to fly. Aves are warm-blooded species with scales on their feet.

Detailed explanation-2: -Class: Aves-Birds are the only organisms with feathers. They are endotherms, maintaining a nearly constant body temperature. They have a hard bill but no teeth.

Detailed explanation-3: -The chordates are named for the notochord, which is a flexible, rod-shaped mesodermal structure that is found in the embryonic stage of all chordates and in the adult stage of some chordate species. It is strengthened with glycoproteins similar to cartilage and covered with a collagenous sheath.

Detailed explanation-4: -Animals in the phylum Chordata share four key features: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.

Detailed explanation-5: -There are a few different reasons that we classify dogs as belonging to the phylum Chordata. The best reason is that they meet the four requirements to be considered a chordate animals: they have a notochord, a dorsal nerve cord, pharyngeal slits, and a post-anal tail during their embryonic stage of development.