Exam 24: Animal Diversity I: Invertebrates

Animals that have distinct right and left sides display symmetry.

Anemones have no

An arthropod embryo has _ germ layer(s).

Which of these groups is characterized by having no body cavity?

One trend in the evolution of animals is the increase in the number of tissue (germ) layers during embryonic development. Flatworms and more complex animals have _ layers.

Organisms that are radially symmetrical have _ embryonic germ layers.

Which germ layer gives rise to the muscle layer of the uterus?

How does the circulatory system of an annelid differ from the circulatory system of a gastropod?

Damage to the embryonic ectoderm would show up as damage to which adult body tissues?

An animal such as a grasshopper can conserve water because it has an elaborately branching system of tubes within its body that it uses for gas exchange. These tubes are called

The organism in the illustration has

Sponges have

Which of these groups is characterized by having a TRUE coelom?

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, a head, and a coelom; has no segmentation; and has bilateral symmetry. To what phylum does this animal belong?

The phylum Nematoda includes which of the following very common organisms, some of which are parasitic and most of which are often found in soil?

Of all of the invertebrate phyla, only members of the phylum can fly.

A cnidarian that builds a calcium carbonate skeleton is a(n)

Flatworms that contain both male and female reproductive organs in the same individual are called .

Sponges are radially symmetrical.

A sea urchin is a member of the phylum