Gastropods that have a shell have a _______. 

This image represents a ___.  planariadraw.png

What type of skeleton do sponges have?

Which of the following statements are CORRECT concerning reproduction in leeches?

In the life cycle of Enterobius vermicularis, where are the eggs commonly deposited?

What is another term for molting?

Cnidarians contain stinging cells called _______________ which contain a stinging apparatus called _______________. 

To what class do flukes belong?

What is the name of the stage of Fasciola hepatica that encysts on pasture?

To what subphylum do all the vertebrates belong?