Mollusca and Related Groups

Front

Protostomia

Back

Mouth development first

Front

Ecdysozoa

Back

They grow by molting their chitin exoskeleton

Front

Mollusca: Mantle

Back

Has shell glands that enable them to grow the shell

Front

Gastropoda: Torsion

Back

Turns their body in a ‘U’ shape and their nerves go in a figure ‘g’

Front

Gastropoda: Development

Back

Share development of a head and coiled shell with cephalopoda

Front

Gastropoda: Aposematic coloration

Back

When an animal is colorful and warns predators

Front

Bivalvia: Gills

Back

Modified gills used for respiration and filter feeding

Front

Bivalvia: Shells

Back

Has two shells

Front

Bivalvia: Example of a shell

Back

Image of a bivalve shell

Front

Cephalopoda: Eye

Back

Cephalopod eye (convergent evolution with the human eye)