Exam 32: The Deuterostomes

One characteristic of the class Holothuroidea is that they:

Mammals descended from a group of reptiles known as:

Echinoderms are unique because:

Marsupials include the:

Movable spines are found on ____ of the phylum Echinodermata.

Most reptiles are ____ and their fertilization is ____.

Within the chordate classes, the unique characteristic of the class Aves is:

Lancelets are:

Echinoderms are characterized by bilateral symmetry in adults, a water vascular system, tube feet, and spiny skin.

Describe the evolutionary relationships between the following organisms. Draw a family "tree" if necessary. Include bony fish, amniotes, lizards, mammals, turtles, birds, reptiles, ray-finned fishes, amphibians, lungfish, and lobe-finned fishes.

Deuterostomes are characterized by ____ and ____ cleavage.

Deuterostomes evolved during the ____ eon.

Which term can be applied to both monotremes and sharks?

Sea stars are primarily:

Class ____ includes mostly extinct species and a few current species such as feather stars and sea lilies.