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?

Mr. DeBroglie proposed that all matter has dual nature. The wavelength of any particle is related to its momentum by this equation: Which of these is the best explanation of why we don’t notice wave behavior in large objects like baseballs, but it is fairly easily detected in small objects like electrons?