Invertebrates Unit 3

Invertebrates

• Have an internal skeleton.

• Do not have an internal skeleton.

Arthropods..

• Have an exoskeleton.

• Have an internal skeleton.

Arthropods are divided into..

• Mammals, reptiles, amphibians and fish.

• Insects, arachnids, crustaceans and myriapods

Insects have

• 6 legs and an exoskeleton.

• Soft bodies and a shell.

Arachnids have

• 2 legs and antennae.

• 8 legs and 8 eyes.

Crustaceans have

• Soft bodies and tentacles.

• 10 legs and 4 antennae.

Myriapods have

• Many legs and a soft segmented body.

• 2 shells.

Gastropods have

• An exoskeleton.

• A shell and a soft body

Cephalopods have

• Tentacles and a soft body.

• Jointed legs and an exoskeleton.

Bivalves have

• Many legs.

• 2 shells.