Hannah Liotta, Sophia Roy, Tanner Moore, Cadan Miller Mollusks Hannah Liotta, Sophia Roy, Tanner Moore, Cadan Miller
What are mollusks? Soft-bodied Live in or near water Unsegmented Includes: Snails and Slugs Clams and Mussels Octopuses and Squids Ⓒ2003www.ck12.org
Bilateral Symmetry Ⓒ1800 http://vintageephemera.blogspot.com/search/label/Sea%20Creatures Ⓒ1998 http://paleo.cortland.edu/tutorial/Bivalves/bivalvia.htm
Movement Foot/Cilia Jet Propulsion/Tentacles
Nervous/Response Present Includes Cerebral Ganglia Pleural Ganglia Pedal Ganglia Nerve Cords Ⓒ2009 https://en.wikipedia.org/wiki/Mollusca#/media/File:Gastropod_nervous_system.gif
Digestion 1 Way digestive system Mouth, esophagus, stomach, and anus Digestive gland Hepatopancreas Breaks down protein and carbohydrates Ⓒ2012www.wikimedia.org
Excretion Tubular nephridia Acts similar to kidney Ex: Gastropods, oysters Normal kidneys Ex: Squids Ⓒ2004www.spongepedia.wikia.com Ⓒ2012www.squid-world.com
Circulation Open Gastropods/Univalves and Bivalves Blood collected from gills sent to heart Closed Cephalopods Heart pumps blood vessels Ⓒ2007www.estrellamountain.edu
Respiration Most have gills Some have lungs Lungs are rare Ⓒ2010www.wikimedia.org
Support/Skeletal Most have an exoskeleton Shell Ⓒ2007 https://en.wikipedia.org/wiki/Exoskeleton#/media/File:BoredEncrustedShell.JPG Support/Skeletal Most have an exoskeleton Shell Some have an endoskeleton Remnants of old shells inside organism Ⓒ2014 http://phylumskeletalsystem.weebly.com/mollusca.html
Reproduction Sexual Hermaphrodites Have male and female sex cells Can’t reproduce with themselves: need another organism
Classes Gastropods/Univalves Bivalves Cephalopods Ⓒ2008www.bogleech.com Ⓒ2009www.blogspot.com Ⓒ2008www.toofishy.com
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
Bivalves Don't burrow Moves very fast Surface dwellers Examples: Oysters, clams, Mussels 2001 https://www.msc.org/cook-eat-enjoy/fish-to-eat/mussels
Cephalopods Head Foot At least 8 arms Tentacles Siphon water to move Propel it out of mantle cavities 2006 http://www.ucmp.berkeley.edu/taxa/inverts/mollusca/cephalopoda.php
Cephalopod Highly intelligent Camouflage Change of skin color Most complex nervous system 2014 http://csnblog.specs-lab.com
More on Mollusks Soft bodied Mollusc “soft thing” Gastropod Stomach foot Cephalopod Cephalopoda “head foot”
Pearls A grain of sand? How a pearl forms Irritant Trapped Senses Coats “aragonite” “conchiolin” Builds its shell Ⓒ2013www.ibtimes.co.uk
Works cited Patrickfrain97, Posted By. "Goodridgebiopatrick." Goodridgebiopatrick. N.p., n.d. Web. 28 Sept. 2016. "How Pearls Are Formed."Pearls.com. N.p., n.d. Web. 28 Sept. 2016. "Mollusk." Encyclopedia Britannica Online. Encyclopedia Britannica, n.d. Web. 28 Sept. 2016."Phylum Mollusca: Digestive, Nervous & Circulatory Systems." Study.com. N.p., n.d. Web. 28 Sept. 2016.
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., 2015. Web. 28 Sept. 2016. "The Gastropoda." The Gastropoda. UCMP, 31 Dec. 2002. Web. 29 Sept. 2016. "Gastropods- Mullusks." Harvard University. N.p., 27 Sept. 2016. Web. 29 Sept. 2016.
Works Cited "Research Guides: Mollusks: Bivalves." Bivalves. N.p., 27 Sept. 2016. Web. 29 Sept. 2016. "Research Guides: Mollusks: Cephalopods." Cephalopods. Harvard, 27 Sept. 2016. Web. 29 Sept. 2016.