Biology Chapter 17 Quiz

A characteristic that is shared by snakes and birds is ______.

A true coelom is ______.

All chordates have ______.

Almost every element of bird anatomy is modified for what?

Among vertebrates, the unique feature of lampreys and hagfish is the ______.

Features unique to mammals include ______.

Flatworms are similar to cnidarians in that both ______.

How do sponges differ from all other animals?

Humans are chordates. Which animal group is most closely related to chordates?

Rays are a type of ______.

The common ancestor of all animals is likely to have been a(n) ______.

The lancelet is a(n) _____.

Unique features of vertebrates include the presence of a(n) ______.

What distinguishes animals from other eukaryotes?

What does the term tetrapod mean?

What name is given to the food-trapping cells of sponges?

Which of the following is a characteristic of all chordates?

Which of these exhibits radial symmetry?

______ are the mammalian group that lay eggs.

______ are the most diverse group of arthropods.