Molluska & annelida notes
- 1. Mollusca The mollusks One of the most diverse animal groups
- 2. Bilateral Coelom-fluid-filled body cavity; the space where the major organs are located
- 3. Radula - a tongue with plates or “teeth” on it; used to scrape food into the mouth
- 4. Mouth and Anus; called a “through gut” Complete stomach and digestive system
- 5. No skeleton; cavity gives shape; shell protects Live everywhere! “Foot” for moving/burrowing Squid use jet propulsion (tentacles); VERY fast
- 6. Name means “soft bodied” There are 3 types: Bivalves Gastropods Cephalopods
- 7. Have a nervous system Ganglia Nerve cords Have an “open circulatory system” Blood is pumped to the spaces and diffuses through the cells
- 8. Many are used for food by man
- 11. True body cavity True coelom
- 12. Mouth and anus; through gut Eat a wide range of material Fertilize soil Leeches have suckers and feed on blood
- 13. Reproduce sexually Are found nearly everywhere
- 14. Complex nervous system Nerve cords AND a brain!!!!!!!!!
- 15. Closed circulatory system!!! Blood is pumped through the body through a complete system of tubes
- 16. Creep along using muscles
- 18. Nobody likes me, everybody hates me I’m gonna eat some worm (er er)s Big fat juicy ones, little tiny squirmy ones Oh see how they do squirm (irm irm) First you bite the heads off, and then you suck the guts out, and then you throw the skins away(a a) Nobody knows how I eat worms twenty-four hours a day (a a).