In class Turbellaria, these animals have endodermal germ tissues that gives rise to the

The pH of human blood is

What anatomical structure(s) and physiology allow Nematodes to have a wide range of movement and the ability to “hold on?”

Turbellarians feed on rotifers, which are

Blood flukes of the genus __________ are important human parasites.

The most highly specialized class of parasites within phylum Platyhelminthes is

It is estimated that there are ________________ species of sea sponges.

The Oligochaeta worms have

A filarial worm which infects dogs, particularly common in the United States is

There are approximately _________ species in Phylum Platyhelminthes.