1. Gastropods, Bivalves, Cephalopods
Mollusks
Gastropods, Bivalves, Cephalopods

2. Gastropods-Largest Group Bivalves-2 Shells
Examples: Snails and Slugs
Bivalves-2 Shells
Examples-Clams, Mussels, Scallops, etc.
Cephalopods- Octopus and Squid
Octopus-Most Intelligent
Giant Squid-Largest Invertebrate

3. Symmetry: ______ Body Plan: Soft body protected by shell
Mantle-Soft outer tissue
Coelomate-Fluid Filled Body Cavity

4. Feeding: Some are filter feeders (bivalves) Herbivores (snails)
Carnivores-Octopus and Squid
Radula
The radula is an anatomical structure that is used by mollusks for feeding, sometimes compared rather inaccurately to a tongue. It is a minutely toothed, ribbon, which is typically used for scraping or cutting food before the food enters the esophagus.

5. Respiration/Circulation/Excretion
Most have an open circulatory system
Visceral Mass contains internal organs
Cephalopods-Closed Circulatory System
What is the difference between an open and closed circulatory system?

6. Response Help Monitor environmental conditions Camouflage
Aggressive behavior
Ink

7. Movement
Burrow
Slide
Sessile
Muscular Foot

8. Reproduction
All sexual reproduction
Video