1. The Invertebrates- Chapter 7

2. Phylum Porifera- sponges
Cellular organization
No tissues or organs
Types of cells
Pinacocytes and porocytes
Choanocytes
Amebocytes
Suspension feeders
Reproduction- asexual and sexual.
~6,000 species.
Habitat- predominantly marine.
Examples- Ophlitaspongia and Haliclona.

3. Sponge Anatomy

5. Asexual Reproduction

6. Sexual Reproduction

7. Feeding

8. 3 Sponge Classes Calcarea- calcareous sponges.
Hexactinellida- glass sponges.
Demospongiae- bath sponges.

9. Phylum Cnidaria- cnidarians
Tissue level organization
Epidermis
Cnidocyte with nematocyst
Epitheliomuscular cells
Gastrodermis
Gland cells
Nutritive-muscular cells
Mesoglea- jellylike middle layer.
Carnivores
Reproduction- asexual and sexual.
Radial symmetry.
~10,000 species.
Habitat- predominantly marine.
Examples- Physalia, Aurelia, and Anthopleura.
-Sensory cells
-Sensory cells

11. Radial Symmetry

14. Cnidarians Are Carnivores

15. Nematocyst Stings

17. Medusae
Ovary
Testis
Feeding polyp
Sperm
Medusa bud
Egg
Zygote
Reproductive
Polyp
Planula
Mature
Colony
Settles on
substrate
Young
Colony

18. 3 Major Cnidarian Classes
Hydrozoa- hydroids and jellies.
Scyphozoa- jellies.
Anthozoa- anemones and corals.

19. Colonial Hydrozoans

20. Colonial Anthozoans

23. Phylum Ctenophora- comb jellies

24. Phylum Mollusca- molluscs
System level organization.
Foot, mantle, radula.
Gills.
All diets.
Reproduction- sexual, external and internal.
Bilateral symmetry.
~200,000 species.
Habitat- predominantly marine.
Examples- Haliotis, Mytilus, and Loligo.

26. Radula- designed for removing food from surfaces, made of chitin.

30. Gastropoda- snails, limpets, abalone, nudibranchs.

31. Bivalvia- clams, mussels, oysters.

32. Cephalopoda- squid, cuttlefishes, nautilus, and octopuses.

35. Polyplacophora- chitons.