5. What type of animal is shown in the figure?

A. flatworm

B. tapeworm

C. roundworm

D. rotifer

6. What is the structure labeled X?

F. the brain

G. the mouth

H. an eyespot J. a nerve cord

7. What is the structure labeled Y?

A. the mouth

B. a flame cell

C. an eyespot

D. the gastrovascular cavity

DIRECTIONS: Complete the following analogy.

8. fluke : schistosomiasis :: filarial worm :

F. trichinosis

G. elephantiasis

H. encysted meat J. swimmer's itch

INTERPRETING GRAPHICS: The figure below shows the internal structure of a rotifer. Use the figure to answer the question that follows.

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