1. Class Anthozoa polyp body form ONLY all marine
some contain zooxanthellae

2. Class Anthozoa some are colonial
 colonies are formed of individual zooids
some are solitary

3. Class Anthozoa- life cycle
Sexual reproduction
sperm
egg
larva

4. Class Anthozoa- life cycle
asexual reproduction
fission
pedal laceration
fission

5. Class Anthozoa
Sea anemones

9. Class Anthozoa
Soft Corals
                                                 
Sea pen
Sea pansy

11. Class Anthozoa
Stony Corals
                            
                                                 

12. The Corals Make up the largest group of Anthozoa Colonial
Secrete skeleton of calcium carbonate
Cup shaped
Polyp is fixed to this

13. Theca
Sclerosepta

16. Fungia spp. Disk Corals

17. Phylum Ctenophora Ch 9

18. Characteristics of Ctenophora
Diploblastic: with ectoderm and entoderm separated by a cellular mesenchyme.
Biradial symmetry with the body axis being oral-aboral.
Gastrovascular cavity with complete gut (mouth, gut, two anal openings).
No type of bodycavity.

19. Ctenes of comb row

20. Ctenes of comb row

21. Comb Jellies Phylum Ctenophora are the larges animals known to rely primarily on cilia for locomotion.

22. Macrocilia

23. Life Cycle Gametes fuse in open water.
egg
sperm
Gametes fuse in open water.
Hermaphroditic adults release gametes.
Pelagic cydippid larva.

24. Feeding Feed with specialized cells called colloblasts or lasso cells.
A few species have cnidocytes.

25. Colloblasts on ctenophore tentacles

26. Figure 9.6 page 277 colloblasts

27. Figure 9.7 page 278 Kelptocnidae

28. Ph. Ctenophora Cl. Nuda Cl. Tentaculata ctene row Deiopea kaloktenota
Pleurobrachia sp.
Coeloplana sp.
Cestus sp.

29. Bioluminescence Produce light using photocytes
Located in the walls of the digestive system
Appears that light is coming from comb rows
NOT all produce luminescence

30. Big Picture The radiate phyla are the first (i.e. basal) Metazoans
Most have a dimorphic life cycle
Specialized structures the Cnidocytes
Some such as corals secrete a calcium carbonate base
Ctenophores produce bioluminescence