Classifying Living Organisms

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Across
  1. 4. Subclass of Mammalia that lay eggs.
  2. 7. Name given to an internal skeleton.
  3. 9. Class of Chordata known as 'jawless fish'.
  4. 10. Term used to describe an animal without a backbone.
  5. 13. Organisms in this kingdom have cells with no cell wall, and feed on other living things.
  6. 14. Animal phylum containing snails, slugs, oysters and mussels.
  7. 15. Class of Chordata that has a skeleton made of cartilage.
  8. 16. Term used to describe an animal with a backbone.
  9. 20. Animal phylum, commonly known as round worms.
  10. 21. Animal phylum, commonly known as starfish.
  11. 22. Subclass of Mammalia that nourish their developing young inside the mother's body by a placenta.
  12. 23. Subclass of Mammalia that give birth to underdeveloped young, that then develop inside a pouch.
  13. 26. Example of an organism found in Kingdom Fungi.
  14. 28. Class of Chordata that lay eggs, are endothermic and covered in feathers.
  15. 29. Example of an organism found in Kingdom Protista.
  16. 30. Term meaning an animal's body temperature varies with the temperature of their environment.
  17. 31. Example of an organism found in Kingdom Monera.
  18. 32. Class of Chordata that give birth to live young, produce milk for their young, and are covered in hair.
Down
  1. 1. Name given to an external skeleton.
  2. 2. Animal phylum containing insects, scorpions, spiders and crustaceans.
  3. 3. Animal phylum, commonly known as flatworms.
  4. 5. Organisms in this kingdom are single-celled, and lack a clearly defined nucleus.
  5. 6. Animal phylum in which animals have bilateral symmetry, and also have a nerve cord.
  6. 8. Class of Chordata known as 'bony fish'.
  7. 11. Class of Chordata that can breathe through their skin and have a tadpole larval stage.
  8. 12. Organisms in this kingdom all contain chlorophyll and are able to photosynthesize.
  9. 17. Term meaning an animal can generate it's own body heat.
  10. 18. Animal phylum, commonly known as segmented worms.
  11. 19. Class of Chordata that lay eggs, are ectothermic and have dry, scaly skin.
  12. 22. Animal phylum, commonly known as sponges.
  13. 24. Organisms in this kingdom have cells that have a cell wall, but cannot photosynthesize.
  14. 25. Organisms in this kingdom are single-celled and may be plant or animal like.
  15. 27. Animal phylum made up of jellyfish, sea anemones and coral polyps.