INVERTEBRATES

MOLLUSKS

• Have soft bodies.
• Have a thick muscular foot.
• They take in oxygen thought gills or lungs.
• Some have shells.

SPONGES

• Have many pores in their bodies and Water flows through the pores.
• Water moves into a central cavity and out through a big opening at the top.
• Very simple animals.
• They get food and eliminate waste through this flow of water.
• Specialized cells for obtaining food and oxygen from water.

ARTHROPODS

• Jointed legs.
• Segmented bodies.
• Some have wings.
• Have an Exoskeleton(hard outer covering).
• Breathe through gills or air tubes.

WORMS

• Have long tube like bodies that are divided into segments.
• Simplest organisms w/ A nervous system and blood in vessels.
• Have a long tube that runs through inner body.
• Take in oxygen from the water through their skin.

ECHINODERM

• Have arms that extend out from the middle of the body.
• Have tube feet that take in oxygen from the water.
• Have spines.
• Ex Sea stars,Brittle stars,and Sea cucumbers.