Exam 15: Animal Evolution

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

The defining trait of hominins is ____.

Which is the most recently evolved embryonic tissue in animals?

Which animal lacks a "true" coelom?

Squids are examples of ____.

Which was the most likely food source for the first terrestrial tetrapods?

A tuna is a ____ fish.

Which is the closest living relative to a bird?

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

Of the following invertebrate groups, the group most closely related to the chordates is the _____.

The smartest of all invertebrates is the ____.

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

The earliest hominin fossils were found in ____.

Most tunicate adults are ____.

Our closest extinct relative is ____.

Jellyfish are ____.