Question

Which of the following bird traits indicate that they share a common ancestor with crocodiles and are reptiles?

A) Feathers
B) Hollow bones
C) Amniotic eggs
D) Warm-blooded metabolism

Answer 1

Birds share a common ancestor with crocodiles, a fact indicated by their amniotic eggs. Both birds and reptiles have eggs adapted for terrestrial environments, and they both descended from dinosaurs, demonstrating this common ancestry. C) Amniotic eggs

Step-by-step explanation:

The trait that indicates birds share a common ancestor with crocodiles and are considered reptiles is C) Amniotic eggs. Both birds and reptiles have amniotic eggs, which are adapted to terrestrial living because of the protective amniotic membranes.

This contrasts with amphibians, whose eggs lack such membranes and must remain in moist environments. Birds and reptiles, including crocodilians like alligators and crocodiles, evolved from a common ancestor and are descendants of dinosaurs. Additionally, the discovery of the fossil Archaeopteryx shows evidence of feathers like birds, suggesting that modern species, including birds and reptiles, share common ancestry.