Invertebrate groups and vocabulary

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Across
  1. 6. Long thin parts on the heads of some insects and some molluscs.
  2. 7. The subgroup of arthropods that contains animals with eight legs like spiders.
  3. 9. The subgroup of molluscs that contains animals with two eyes on the end of antennae.
  4. 11. The subgroup of arthropods that contains animals with six legs and wings.
  5. 15. The group of invertebrates that contains animals like jellyfish and sea anemones.
  6. 17. The hard outer part of bivalves and snails.
  7. 19. A hard outer layer that protects the bodies of arthropods.
  8. 20. The group of invertebrates that contains animals like starfish and sea urchins.
  9. 21. The group of invertebrates that have got soft bodies and some have got shells.
Down
  1. 1. The subgroup of arthropods that contains animals with eight legs and two claws like crabs.
  2. 2. The bodies of myriapods are divided into these.
  3. 3. The subgroup of molluscs that contains animals with a large head and tentacles.
  4. 4. Insects' bodies have three segments. This is the part in the middle.
  5. 5. Insects fly with these.
  6. 8. The group of invertebrates that have got bodies covered in an exoskeleton and legs with joins.
  7. 10. Insects' bodies have three segments. This is the last part.
  8. 12. The subgroup of molluscs that contains animals with two shells.
  9. 13. The subgroup of arthropods that contains animals with segments and lots of legs.
  10. 14. Crabs use these like hands.
  11. 16. The group of invertebrates that contains earthworms.
  12. 18. A long, thin part of the body of jellyfish.