Exam 33: Noncoelomate Invertebrates

In 1995,organisms belonging to the species Symbion pandora were discovered and assigned to the phylum

Which one of the following taxa is not part of the grouping of clades called the Spiralia?

Which one of the following features is not found in animals of the phylum Rotifera?

All of the following statements about Cnidaria are correct with the exception of

Which of the following are not correctly matched?

Which one of the following groupings includes animals referred to as "wheel animals"?

Flukes are parasitic worms whose hosts during the larval stage are usually

Most species of tapeworms live in the

Which one of the following statements about the free-living flatworm is false?

Trichinella nematodes reach muscle tissue,forming resistant cysts,after

Which of the following is not a type of cnidarian?

Choose the letter of the best match from the following: -Sponges;lack tissue organization.

Choose the letter of the best match from the following: -Pseudocoelomate worms with a gut tube open at both ends.

The vase-like body of a simple sponge is likely to contain all of the following materials or layers except

Which of the following belongs to the phylum Ctenophora?

The stage in the fluke's life history in which it escapes from the snail and is ready to enter the intermediate or final host is the

Which of the following is the key transitions in body design that are responsible for most of the differences of Eumetazoa?

Which one of the following taxa is not part of the grouping of clades called the Platyzoa?

The _____ are small,free-living pseudocoelomates,often smaller than some ciliate protists.

Cnidarians are grouped into four or five classes.Which one is not one of the classes of Cnidaria?