Brody Schrecker Unit 8 Crossword

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Across
  1. 4. cold-blooded vertebrate with scales
  2. 8. relationship in which one organism benefits and the other is unaffected
  3. 11. colonial cnidarian that secretes a hard skeleton
  4. 15. internal support structure found in vertebrates
  5. 18. Symmetry in which body parts are around a central axis or circular body type
  6. 19. animal with an exoskeleton, segmented body, and jointed appendages
  7. 20. Animals that have a nerve running down their back.
Down
  1. 1. major developmental change from juvenile to adult
  2. 2. animal that consumes both plants and other animals
  3. 3. chordata that possess a backbone
  4. 5. Credited with coming up with the idea of taxonemy
  5. 6. Animal group including snails, clams, and octopuses
  6. 7. Marine animal group including sea stars and sea urchins
  7. 9. simplest animal on earth belonging to porifera
  8. 10. Biological process of producing offspring
  9. 12. external supportive covering found in arthropods
  10. 13. Body Symmetry with left and right sides that mirror each other
  11. 14. relationship where both organisms benefit
  12. 16. animal group that includes jelly fish and sea anemones
  13. 17. vertebrate that lives part of its life in water and part on land