IB Bio Flash

Porifera

No symmetry

Attached to surface

Pores in body

No mouth/anus

Cnidaria

Radial symmetry

tentacles

Stinging Cells

Mouth but no anus

Platyhelminths

Bilateral symmetry

Flat body

Unsegmented

Mouth but no anus

Annelida

Bilateral symmetry

Bristles often present

Segmented

Mouth and Anus

Arthropoda

Bilateral symmetry

Exoskeleton

Segmented

Joined appendages

Mollusca

Muscular foot and mantle

Shell usually present

Segmentation not visible

Mouth and Anus

Chordata

Notochord

Dorsal nerve cord

Pharyngeal gill slits

Post-Anal tail