Classification Crossword

1234567891011121314151617181920
Across
  1. 3. a plant growing where it is not wanted
  2. 5. key a key with two choices at each stage
  3. 7. a skeleton inside the body
  4. 9. animals with back bones
  5. 15. the process of putting things in to group
  6. 16. animals with scales covering their body
  7. 18. the building block of all living things
  8. 20. made of only one cell
Down
  1. 1. an organism that live on or in another organism called a host
  2. 2. single cells that grow into a new moss plant, fern or fungus
  3. 4. a skeleton inside the body
  4. 6. a scientist who specialises in grouping and naming things
  5. 8. the 6th division of the classification of living things
  6. 10. animals with radial symmetry, one body opening and stinging cells
  7. 11. made of many cells
  8. 12. The last level of classification of living things
  9. 13. can only be seen with the help of a microscopic
  10. 14. able to be seen with the naked eye
  11. 17. the first level of classification
  12. 19. the 3rd division of the classification of living things