Mollusks


 * Mollusks**

__Digestive system-__ food enters through a siphon system, then goes to the digestive gland.Then leaves as waste. By: Emily __Nervous system-__ Doesn't have a formal nervous system, but has a lot of ganglia that make pulses. By: Emily __Body plan-__ They have a three part body plan, visceral mass, the mantle, and the foot, they have bilateral symmetry. The visceral mass is the central sections of the body of the mollusk, which contains mollusk's organs. The outside of the visceral mass is a heavy fold called the mantle which is made of tissue, which secretes the mollusks shell. The foot is a muscular region, and it is used primarily for locomotion. By: Carly __Picture-__ [|http://www.google.com/imgres?q=mollusk&um=1&hl=en&client=firefox-a&sa=N&rls=org.mozilla:en-US:official&biw=1024&bih=470&tbm=isch&tbnid=JBMR-5nRi9Mm6M:&imgrefurl=http://7salemanimalkingdom.wikispaces.com/Mollusks&docid=PIqBgPAdggPOFM&imgurl=http://7salemanimalkingdom.wikispaces.com/file/view/T761279A.gif&w=544&h=408&ei=IfGmTv7LMor7sQK8mf29Dw&zoom=1&iact=hc&vpx=544&vpy=127&dur=7308&hovh=194&hovw=259&tx=136&ty=100&sig=106878696202376351013&page=1&tbnh=108&tbnw=176&start=0&ndsp=10&ved=1t:429,r:8,s:0] By: Christina __Positive impact on humans__ __Negative impact on humans__ __1 interesting fact-__ The bite of the blue-ringed octopus is often fatal and causes excruciating pain that can last for over a month.By: Christina