Taxonomy crossword

123456789101112131415
Across
  1. 3. 7th level
  2. 6. 9th level
  3. 10. 6th level
  4. 11. 3rd level
  5. 12. unicellular
  6. 14. unicellular
  7. 15. Ex: mushrooms
Down
  1. 1. 4th level
  2. 2. 5th level
  3. 4. backbone
  4. 5. 1st level
  5. 7. no backbone
  6. 8. 2nd level
  7. 9. animals
  8. 13. 8th level