Question

Based on the information shown in the data table and the cladogram shown below, which of the following best describes the evolutionary history of birds? Claws/Nails Feathers Jaws Lungs Mammary glands Bird X X X X Hagfish Lizard X X X Rabbit X X X X Salamander X X Tiger X X X X Trout X Image depicts a cladogram with hagfish, trout, salamander, lizard, bird, rabbit, and tiger represented. Trout diverge from hagfish with the introduction of jaws. Salamander diverges from trout with the introduction of lungs. Lizard diverges from salamander with the introduction of claws and nails. Bird diverges from lizard with the introduction of feathers. Rabbit and tiger diverge from lizard with the introduction of mammary glands. They are more closely related to salamanders than they are to lizards. They evolved into a separate species as a result of having claws and feathers. They have jaws, lungs, and feathers, but lack claws, nails, and mammary glands. They share a more recent common evolutionary ancestor with lizards than they do with salamanders.

Answer 1

Birds have evolutionary traits such as jaws, lungs, and feathers, originating from maniraptoran theropod dinosaurs within the clade Dinosauria. They lack claws and mammary glands and are more closely related to lizards than to salamanders.

Step-by-step explanation:

Based on the provided information and cladogram, the evolutionary history of birds indicates that they have jaws, lungs, and feathers, but lack claws, nails, and mammary glands. Birds diverged from lizards with the introduction of feathers, sharing a more recent common evolutionary ancestor with lizards than with salamanders. Birds evolved within the clade Dinosauria, specifically from maniraptoran theropod dinosaurs about 150 million years ago, which were bipedal predators. Unlike the reptile group Ornithischia, which misleadingly translates to 'bird hips', it is the Saurischia group, specifically the theropods, that gave rise to birds. The presence of feathers in birds is an evolutionary trait that most likely appeared in the common ancestor of the dinosaur lineages, both ornithischian and saurischian.

Answer 2

They share a more recent common evolutionary ancestor with lizards than they do with salamanders.

Step-by-step explanation:

I just know (;