Table of ContentsPorifera are organized at tissue level Defining characteristic of Porifera Porifera can reproduce asexually or sexually Porifera are very simple animals Phylum Cnidaria Defining Characteristics Cnidaria are also very simple animals Some Cnidarians undergo alternation of generations Characteristics of Platyhelminthes |
Author: Stan Eisen
Email: seisen Home Page: http://www.cbu.edu/~seisen/ Other information: |