Invertebrate Animal Phyla

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Across
  1. 4. Sponges
  2. 7. Platyhelminthes is the first phylum to demonstrate this type of symmetry
  3. 8. Echinoderms only have bilateral symmetry as ____________
  4. 11. Molluscs were the first to have this pattern of development
  5. 15. Spiny-skinned animals
  6. 16. Soft-bodied animals
  7. 17. Jointed-foot animals
  8. 18. The molluscan class that includes octopuses and squids
  9. 20. Arthropods have this type of support system
  10. 22. Jellyfish and relatives
Down
  1. 1. An example of a cnidarian
  2. 2. Cnidarians have this type of symmetry throughout their lives
  3. 3. Flatworms
  4. 5. An example of an annelid
  5. 6. Echinoderms and chordates (vertebrates) have this pattern of development
  6. 9. Annelids were the first animals to demonstrate _____________
  7. 10. Poriferans have this type of symmetry
  8. 12. Segmented worms
  9. 13. The class of arthropods that includes lobsters and crabs
  10. 14. An example of an echinoderm
  11. 19. An example of Platyhelminthes
  12. 21. This is the highest level of organization for cnidarians
  13. 22. This is the highest level of organization for poriferans