1. Hannah Liotta, Sophia Roy, Tanner Moore, Cadan Miller
Mollusks
Hannah Liotta, Sophia Roy, Tanner Moore, Cadan Miller

2. What are mollusks? Soft-bodied Live in or near water Unsegmented
Includes:
Snails and Slugs
Clams and Mussels
Octopuses and Squids
Ⓒ2003www.ck12.org

3. Bilateral Symmetry
Ⓒ1800
Ⓒ1998

4. Movement
Foot/Cilia
Jet Propulsion/Tentacles

5. Nervous/Response Present Includes Cerebral Ganglia Pleural Ganglia
Pedal Ganglia
Nerve Cords
Ⓒ2009

6. Digestion 1 Way digestive system Mouth, esophagus, stomach, and anus
Digestive gland
Hepatopancreas
Breaks down protein and carbohydrates
Ⓒ2012www.wikimedia.org

7. Excretion Tubular nephridia Acts similar to kidney
Ex: Gastropods, oysters
Normal kidneys
Ex: Squids
Ⓒ2004www.spongepedia.wikia.com
Ⓒ2012www.squid-world.com

8. Circulation Open Gastropods/Univalves and Bivalves
Blood collected from gills sent to heart
Closed
Cephalopods
Heart pumps blood vessels
Ⓒ2007www.estrellamountain.edu

9. Respiration Most have gills Some have lungs Lungs are rare
Ⓒ2010www.wikimedia.org

10. Support/Skeletal Most have an exoskeleton Shell
Ⓒ2007
Support/Skeletal
Most have an exoskeleton
Shell
Some have an endoskeleton
Remnants of old shells inside organism
Ⓒ2014

11. Reproduction Sexual Hermaphrodites Have male and female sex cells
Can’t reproduce with themselves: need another organism

12. Classes Gastropods/Univalves Bivalves Cephalopods
Ⓒ2008www.bogleech.com
Ⓒ2009www.blogspot.com
Ⓒ2008www.toofishy.com

13. Gastropods/Univalves
Gastropods are univalves
Have one shell (spiral) except slugs
Widest range of mollusks
Tentacles on head, eyes on top
Ciliated cells
Slime trails
Ⓒ2002www.indiana.edu

14. Bivalves Don't burrow Moves very fast Surface dwellers Examples:
Oysters, clams, Mussels
        2001

15. Cephalopods Head Foot At least 8 arms Tentacles Siphon water to move
Propel it out of mantle cavities
2006

16. Cephalopod Highly intelligent Camouflage Change of skin color
Most complex nervous system
2014

17. More on Mollusks Soft bodied Mollusc “soft thing” Gastropod
Stomach foot
Cephalopod
Cephalopoda “head foot”

18. Pearls A grain of sand? How a pearl forms Irritant Trapped Senses
Coats “aragonite” “conchiolin”
Builds its shell
Ⓒ2013www.ibtimes.co.uk

19. Works cited
Patrickfrain97, Posted By. "Goodridgebiopatrick." Goodridgebiopatrick. N.p., n.d. Web. 28 Sept
"How Pearls Are Formed."Pearls.com. N.p., n.d. Web. 28 Sept
"Mollusk." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 28 Sept "Phylum Mollusca: Digestive, Nervous & Circulatory Systems." Study.com. N.p., n.d. Web. 28 Sept

20. Works Cited
"The Wonders of the Seas: Mollusks." The Wonders of the Seas: Mollusks. N.p., n.d. Web. 28 Sept. 2016
"Mollusks of Australia." Marine Education Society of Australasia. N.p., Web. 28 Sept
"The Gastropoda." The Gastropoda. UCMP, 31 Dec Web. 29 Sept
"Gastropods- Mullusks." Harvard University. N.p., 27 Sept Web. 29 Sept

21. Works Cited
"Research Guides: Mollusks: Bivalves." Bivalves. N.p., 27 Sept Web. 29 Sept
"Research Guides: Mollusks: Cephalopods." Cephalopods. Harvard, 27 Sept Web. 29 Sept