1.Name and briefly characterize the four classes of fishes. Indicate which class is considered to be most similar to the ancestral chordate and which is the ancestor of the land vertebrates, justifying your choices.
2.Describe how angiosperms have shown coevolution with the various pollinators and seed dispersers.

3.It is clear that certain traits in early primate evolution played a key role in leading to the survival and further development of members of the order. Explain how traits such as manual dexterity, upright posture, acute vision, larger brain, extended infant care, and modified teeth laid the groundwork for the evolution of humans.