Exam 16: Animal Evolution

The first known hominin species to leave Africa was ____.

The vertebral column develops from the ____.

Animals that use a radula to scrape up algae are _____.

The most diverse of the mammals are the ____.

The defining trait of hominins is ____.

Which primate group is classified as hominins?

Which of the following is a defining trait found in chordate embryos?

Which is the closest living relative to a bird?

The notochord is most closely associated with the ____.

Which is the most recently evolved embryonic tissue in animals?

Which animal lacks symmetry, has no embryonic tissues, and has intracellular digestion?

Humans are least closely related to the ____.

Our closest extinct relative is ____.

Which geologic periods are known as the "Age of Reptiles"?

A feature that distinguishes New World and Old World monkeys is ____.

Which animal has radial symmetry, a gastrovascular cavity, and the same opening for the entry of food and expulsion of waste?

Most tunicate adults are ____.

Which chordate has a four-chambered heart, no bladder, no teeth, and lack of a penis in the males?

A horseshoe crab uses its long extended spine for what purpose?