mollusca --> "soft bodies"

Common characteristics:

• have mantle
• have soft/squishy bodies

Gastropods

Pelycapods/Bivalves

Cephalopods

Gastropods

• meaning
• animal examples
• unique characteristics

Meaning - "stomach foot"

Snails, slugs

Belly muscles contract, moving the gastropod along. Gastropod leaves behind irradescent trail of slime (mucus)

Eat with a "radula" - scraper tongue

Pelycapods/Bivalves

• Meanings
• Examples
• Unique characteristics

Meaning of:

     Pelycapod - "Ax foot"

     Bivalve - "Two shell (two part to their shell)

Oysters, clams

Two parts to their shell, connected by a hinge

Filter feed

Clams dig into sand with their foot

Oysters attatch to something

Cephalopods

• Meaning
• Animal Examples
• Unique Characteristics

Meaning - "head foot"

Octopus, squid, chambered nautilus, cuttlefish

Predators

Have tenticles

Clams

-Gills are covered in sticky mucus

-nutrients, food get stuck in mucus

-Sillia on the gills sweep mucus with nutrients towards mouth

-Mantle secretes "nacre" (mother of pearl), which hardens in to shell

-Nacre also covers any irritant inside shell (eg. sand)

-Primitive heart

-Incurrent siphon

-Excurrent siphon