INVERTEBRATE

INVERTEBRATE

1. Characteristics

   • They don't have a backbone
   • Most of them have some protection
     • Hard shell
     • Exoskeleton (a rigid covering)
   • Some others don't have any protection

2. MOLLUSCS

   • Aquatic/some on land
   • Some have a soft body but others have a shell
     • Exoskeleton + mantle (protection)
       • Some of them have a muscular foot
   • Types
     • Gastropods
       • Some: spiral shell (snails)/ no shell
         • Head and body + 4 tentacles
       • herbivores
     • Bivalves
       • They have two shells (valves)
         • A soft body and no head
           • Fiilter-feeders
     • Cephalopods
       • A big head, a mouth and well-developed eyes
         • Long arms and tentacles
           • carnivores

Images and files in the map