Mollusks

1. Mollusks

2. 3 Different Groups • There are three different groups of Mollusks: • Gastropods • Bivalves • Cephalopods

3. Characteristics • Mollusks are soft bodied invertebrates • They have one or two shells • They either live in water or land • Gius- the organs in which carbon dioxide from the mollusk is exchanged to oxygen in water • They have a thin layer of tissue called mantle • They have a layer of mucus on which they slide • They have a tongue like organ with rows of teeth

4. Gastropods • Use a radula, a tongue like organ with rows of teeth to obtain food • It eats algae • Bivalves • Eats phytoplankton • Use gills for eating tiny food particles Food

5. Food • Cephalopods • Eats fish, crustaceans, worms, and other mollusks

6. Habitat • Gastropods • Lives best in deep shallow water • Reefs and sea grass • Cephalopods • Lives in rocks, corals, or burrows • Bivalves • Lives mostly in moist areas

7. Facts • The body plans of mollusks include a mantle, visceral mass, head and foot • Gastropods typically have one shell, a foot, and eat using a radula • Bivalves have a hinged two- part shell, a muscular foot, and eat by filtering their food from the water • Cephalopods have a head, a foot which has been modified into tentacles, and a well developed nervous system

8. Facts • Mollusks are food for many animals, have commercial uses, and are used for research • Mollusks fossils date back more than 500 million years ago • A natural pearl begins its life inside an oyster

9. Reproduction • Mollusks have reproductive organs • The male mollusk goes behind the female • He then puts “stuff” into the female • The female can hold the “stuff” for as long as she wants, until the babies are ready to come

10. By: Hera, Aramide, Angela(x