Invertebrates

Invertebrates

1. Molluscs

   • Gastropod
   • bivalves
   • cephalopod

2. cnidarians

   • jelly - like body
   • venomous tentacles

3. sponges

   • live in water
   • the simplest invertebrates

4. echinoderms

   • hard, spiny skin
   • starfish are echinoderns

5. annelids

   • long, soft body
   • moist skin
   • parasites

6. Arthropods

   • crustaceans
     • two body parts
       • cephalothorax
       • abdomen
     • exoskeleton very hard
     • five pairs of legs
   • insects
     • three body parts
       • head
       • abdomen
       • thorax
     • two antennae
     • 3 pairs of legs
   • Arachnids
     • two body parts
       • cephalothorax
       • abdomen
     • 4 pairs of legs
     • eight eyes
   • miriapods
     • segmented bodies
     • many pairs of legs
     • 2 antennae

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