Exam 24: Animals Ii: the Chordates

Which animals develop with an organ made from maternal and embryonic tissues that allows the bloodstreams to transfer materials without mixing?

What is the main reason that duck-billed platypuses are classified as mammals rather than birds? Consider that they possess a bill, as do birds, and lay eggs rather than give birth to live young like other mammals.

Which chordate feature is present in adult tunicates?

Which body feature in birds is a necessity to allow powerful flight muscles to operate?

Geneticists map ancient human movements using ____.

Match the animal group to the correct description. -Members of this group have cartilaginous skeletons but also possess jaws.

Which types of fish have gill slits hidden beneath a gill cover?

The vertebrate jaw first appeared in which organism?

Four of the five answers are used to identify a fossil as a hominin species. Select the exception.

Four of the five adaptations below allowed animals to live on land. Select the exception.

Amphibians are most dependent on an aquatic environment for ____.

Nearly half of the 5,000 placental mammal species are ____.

Anatomically modern humans originated in ____.

The evolutionary trend of bipedalism refers to ____.

The primate fossil named Lucy was a member of the ____ genus.

Match the animal group to the correct description. -Some members of this group are fully terrestrial except for reproduction.