vocab (Ka’Maria)

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Across
  1. 4. a gas filled sac in many bony fishes that help control buoyancy
  2. 6. the process of shedding an exoskeleton
  3. 8. body plan where body parts are arranged around a central axis
  4. 12. eggs with a protective membrane
  5. 14. an organ in pregnant animals that provides nutrients
  6. 15. a hydraulic system in echinoderms
  7. 17. an animal with a backbone
  8. 19. animal lacking a backbone
  9. 20. body plan with a single plane of symmetry, resulting in two mirrored halves
Down
  1. 1. an internal skeleton
  2. 2. an organism that possesses both male and female reproductive organs
  3. 3. an organism that generates its own body heat
  4. 5. lacking symmetry no consistent body plan
  5. 7. milk producing glands found in female mammals
  6. 9. a free swimming bell shaped form of a cnidarian
  7. 10. asexual reproduction where a new organism develops from an outgrowth
  8. 11. a firm, flexible connective tissue that provides support in some vertebrates
  9. 13. a rigid external covering that supports and protects there body of some interbrates
  10. 14. a sessile form of a cnidarian
  11. 16. an organism that relies on external sources of heat to regulate it’s body temperature
  12. 18. organism that life on or near the bottom of a body of water