Exam 15: Marine Animals

What do squid use as a decoy defense mechanism?

What is the difference between invertebrate and vertebrate chordates? What organism has characteristics of both?

What do the simplest vertebrates lack?

How do some predatory sharks find their prey?

Squid are the most intelligent invertebrates.

The teeth in odontocetes are made of baleen.

Polychaetes are the most successful worm phyla, being found in terrestrial, aquatic, and marine environments.

What class is comprised of nautiluses, octopuses, and squid?

The evolution of the notochord in chordates permitted a more complex embryonic development.

Which phylum has the most number of species?

Cnidarians exhibit bilateral symmetry, an advancement from the phylum Porifera.

What adaptation have only toothed whales developed for prey detection?

Marine birds usually avoid land unless they are finding food.

Sharks and rays tend to be larger than bony fish.

Compare and contrast the three phyla of worms. Which is considered to be the most evolutionarily advanced?

What is the transitional organism from invertebrates to vertebrates?

What is the term for vertebrates who have a skeleton made of cartilage?

What is considered the most primitive true animal?

What animal is responsible for building tropical reefs? What is the term for this behavior? What kind of symbiosis occurs within the tissues of these organisms?

What is an ophiuroid?