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What structure protects or covers the eye when amphibians and reptiles are underwater?

To what superclass does the jawless fishes belong?

Which of the following is TRUE concerning flatworms?

Which type of symmetry is defined as division into similar halves divided only along the midline or sagittal plane?

What are the structures responsible for excretion in flatworms?

Which of the following is an accurate definition of evolution?

Match the information to the correct mammalian reproductive pattern. 

Match the skeletal structures to the image below. bird skeleton label.png

Which of the following are correct characteristics of animals?

In the life cycle of Dirofilaria immitis, how is the host infected?