Ocean life brain teaser

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Across
  1. 4. – animal with a backbone
  2. 6. Glands – glands that produce milk
  3. 9. – cold-blooded; body temperature depends on environment
  4. 10. Vascular System – fluid system in echinoderms used for movement/feeding
  5. 12. Bladder – organ that helps fish control buoyancy
  6. 13. – animal without a backbone
  7. 14. stationary, tube-shaped body form
  8. 16. – warm-blooded; maintains body heat
  9. 19. Symmetry – body has left and right halves that match
  10. 20. – internal skeleton inside the body
Down
  1. 1. – hard outer covering for support/protection
  2. 2. Symmetry – body parts arranged around a center
  3. 3. – organism with both male and female reproductive parts
  4. 5. – no body symmetry
  5. 6. – shedding an exoskeleton to grow
  6. 7. – flexible tissue
  7. 8. – asexual reproduction where a new organism grows off the parent
  8. 11. Eggs – eggs with a protective shell
  9. 15. – living on the bottom of a body of water
  10. 17. – free-swimming, jellyfish-like body for
  11. 18. – organ that nourishes a developing baby inside the mother