Dozier Marshall

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Across
  1. 3. external covering for the body in verta*
  2. 4. network of water vessels
  3. 5. organ that develops in uterus pregnancy
  4. 6. flexible connective tissue
  5. 9. form of a coelenterate like a sea anemone
  6. 12. "cold-blooded"
  7. 13. type of asexual reproduction in plants
  8. 14. at the bottom of a body of water
  9. 15. dependent on internal heat
  10. 16. An air-breathing egg
  11. 18. internal gas-filled organ
  12. 20. symmetry around a central axis
  13. 21. an animal without backbone
Down
  1. 1. being divisible into even halves
  2. 2. possession of a backbone or
  3. 7. lack of symmetry
  4. 8. an internal skeleton,
  5. 10. shed old feathers, hair, or skin, or an old shell
  6. 11. having both male and female parts
  7. 17. responsible for lactation
  8. 19. a form of cnidarian that is umbrella like