Members of the phylum Annelida are dioecious.

Members of the phylum Nematoda have a closed circulatory system.

In jellyfish, the free swimming form is called a polyp.

The anticoagulant used by leeches is __________________.

The term “Gastropoda” literally means _______________ foot.

Complete metamorphosis would include egg, larva, pupa and adult.

The stinging cells of cnidarians are called __________________.

Tapeworms consist of repeating units, each of which contains a complete set of male and female reproductive structures. These repeating units are called a __________________.

All of the following animals are mollusks except

Here is a diagram showing the 2s orbital. In this diagram what do the dark areas represent?