An organism that must eat to get it's food

A term used to describe the back or upper side of an organism

What is the most successful class of arthropods?

All Chordates have a dorsal nerve chord, notochord and which other characteristic?

Which class of chordates contain an operculum?

The term used to describe a digestive system that has both a mouth and an anus

A concentration of nerve tissue and receptors at the anterior end of the animal’s body.

Which phyla do we first see 3 germ layers?

What subphylum contain the jawless fish?

What class of Chordates do we first see eggs in which the embryo is surrounded by a fluid filled sac-an amnion

What type of symmetry is division into equal halves by passing a plane through the central axis of the animal in any direction

Is a fluid filled cavity surrounded by the mesoderm

Which phyla do we see a simple circulatory system?

What subphylum contain the jawed fish?

What class of chordates are the first to contain a 4 chambered heart?

What type of symmetry is division into equal halves only along a single plane. Each half is a mirror image of the other

This phyla is asymmetric, has 2 germ layers and lacks a body cavity.

What is the first phyla to have a body cavity? (it does not possess a true body cavity)

What class of Gnathostomes is made of cartilage, has a 2 chambered heart, and must move to breathe?

What class of chordates have internal fertilization and development, and have the largest surface area in the lungs?

A sponge possessed displays which type of symmetry?

This phyla has a hard exoskeleton and jointed appentages

What phyla of invertebrates do humans eat most?

What is the first class of chordates to contain a 3 chambered heart?

All of the vertebrates are in which phylum of Animalia?