This 23 page document is part of a teacher written textbook for Zoology. Explore all of the major invertebrate phyla: Porifera, Cnidaria, Platyhelminthes, Mollusca, Nematoda, Annelida, Arthropoda and Echinodermata. Told with wit and humor that high school students can connect with.
To see all individual chapters in the book visit our Zoology category.
Or get the whole textbook in either a PDF format
or Editable Word document