chapter 24 science crossword

123456789101112
Across
  1. 4. - Animals that don’t have a backbone
  2. 6. - arthropods that have only two body regions
  3. 7. - invertebrates with long, flattened bodies and bilateral symmetry.
  4. 10. - a rigid body covering
  5. 11. - a group of animals that have radial symmetry
  6. 12. - soft bodied invertebrates that usually have a shell
Down
  1. 1. - primitive sedentary aquatic invertebrate with a soft porous body
  2. 2. - animals that have jointed appendages
  3. 3. - hollow bodied animals with two cell layers that are organized into tissues
  4. 5. - a group of parasites such as tapeworms.
  5. 8. - completely changing body form
  6. 9. - the arrangement of the individual parts of an object that can be divided into similar halves