The Phylum Puzzle

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Across
  1. 3. An organism cannot be divided into two parts
  2. 6. Animals that survive by living inside or on another organism
  3. 7. Many are Parasites
  4. 9. Invertebrates that include snails and slugs
  5. 12. A thick hard outer covering
  6. 13. Mammals, Amphibians,Fish,Reptiles,Birds,
  7. 14. Sponges or Sea sponges
  8. 15. A fluid-filled internal cavity surrounded by muscle tissue
Down
  1. 1. A body plan in which an organism can be divided into two parts that are nearly identical anywhere through
  2. 2. Animals with back bones
  3. 4. A body plan in which an organism can be divided into two nearly identical parts
  4. 5. Animals with no back bone.
  5. 8. The internal rigid framework that supports you and other animals
  6. 10. An inherited trait that increases an organism's chance of survival
  7. 11. Includes spiders