Exam 24: Animals Ii: the Chordates

Match the species to the correct description. -Homo erectus

The vertebrate fish group that most likely gave rise to the tetrapods is the ____.

The vertebrate lung first appeared in which organism?

Four of the five answers are important evolutionary adaptations in primates. Select the exception.

Four of the five answers listed below are anthropoids. Select the exception.

Birds differ from other reptiles in that birds ____.

Match the species to the correct description. -Homo sapiens

Mammals are the only vertebrates that possess ____.

Although the phylogenetic lineages for hominids are not definitive, four of the five statements are possible. Select the exception.

Four of the five answers below characterize one group of chordates. Select the exception.

By adjusting the volume of gas in ____, a ray-finned fish can change its buoyancy so that it remains suspended at the desired depth.

The notochord in embryos serves a similar function to the ____ in adults.

The most primitive vertebrates are ____.

Sharks, rays, and skates belong to what group?

Which of the following likely favored the transition to bipedalism?

Australopiths show a trend toward improved upright walking, smaller teeth, and greater hand dexterity. Like other early hominins, they retained a ____.

In tunicates, the notochord ____.

Match the animal group to the correct description. -Lampreys could qualify for membership in this group.

Humans are least closely related to the ____.

Match the animal group to the correct description. -Members of one unusual group may have been ancestors of amphibians.