Consider the phylogenetic tree. A phylogenetic tree is shown. The root of the tree is dinosaurs and birds. The branches are crocodiles, primates, amphibians, ray-finned fish, and shark. Which two organisms are most closely related, based on the tree above? ray-finned fishes and sharks rodents and primates dinosaurs and crocodiles dinosaurs and birds

dinosaurs and birds

Explanation:

Dinosaurs and birds are considered as the most closely related species to one another because they are evolved from a common ancestor. They show resemblance in many ways such as physical structure, both dinosaurs and birds moves on two feets etc. In phylogenetic tree, dinosaurs and birds are the roots from which other organism evolved. So that's why dinosaurs and birds are considered the most closely related species living on earth.

the answer is "a.) well–developed vascular system."

explanation: