'Fertilize eggs' diaporamas de présentation

Worms and Mollusks

Ms. Moore 2/11/13. Worms and Mollusks. What is a flatworm?. Phylum: Platyhelminthes Flatworms are soft, flattened worms that have tissues and internal organ systems. They are the simplest animals to have 3 embryonic germ layers , bilateral symmetry , and cephalization .

652 views • 43 slides

Worms and Mollusks

Ms. Moore 10/18/12. Worms and Mollusks. What is a flatworm?. Phylum: Platyhelminthes Flatworms are soft, flattened worms that have tissues and internal organ systems. They are the simplest animals to have 3 embryonic germ layers , bilateral symmetry , and cephalization .

564 views • 43 slides

Diversity of Life

272 views • 11 slides