Respiratory organs in the phylum Arthropoda includes gills, book lungs and tracheal tubes.

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

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

Earthworms use _____________________ muscles for locomotion.

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

The intermediate host for most species of flukes is the ___________________.

A species that has separate male & female sexes is referred to as

This diagram depicts the energies of a few shells (energy levels) for the atom that produced the spectrum above. Image Description Diagram of five lines of energy levels drawn horizontally. n=1 is at the bottom and n=5 is at the top. Starting from the top, the line n=5 is shown. Moving downward, there is a small gap between the line n=5 and n=4, a slightly larger gap between n=4 and n=3, an even larger gap between n=3 and n=2, and a very large gap is shown between n=2 and n=1. Which of these situations would cause the atom to emit the highest frequency photon?

Members of the phylum Annelida have open circulatory systems.

Triploblastic animals are grouped according to body cavity which is referred to as a