Classifying Living Organisms

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Across
  1. 3. Class of Chordata that can breathe through their skin and have a tadpole larval stage.
  2. 5. Term used to describe an animal with a backbone.
  3. 8. Subclass of Mammalia that give birth to underdeveloped young, that then develop inside a pouch.
  4. 10. Term meaning an animal's body temperature varies with the temperature of their environment.
  5. 12. Subclass of Mammalia that nourish their developing young inside the mother's body by a placenta.
  6. 15. Organisms in this kingdom are single-celled, and lack a clearly defined nucleus.
  7. 16. Name given to an external skeleton.
  8. 18. Term used to describe an animal without a backbone.
  9. 19. Class of Chordata that has a skeleton made of cartilage.
  10. 21. Example of an organism found in Kingdom Protista.
  11. 25. Animal phylum, commonly known as segmented worms.
  12. 28. Organisms in this kingdom have cells with no cell wall, and feed on other living things.
  13. 31. Animal phylum containing snails, slugs, oysters and mussels.
  14. 32. The plant subclass that has one seed leaf, and parallel veins in their leaves.
  15. 35. Subclass of Mammalia that lay eggs.
  16. 36. Organisms in this kingdom have cells that have a cell wall, but cannot photosynthesize.
  17. 38. Animal phylum in which animals have bilateral symmetry, and also have a nerve cord.
  18. 40. A type of tree that belongs to the Conifer class.
  19. 41. Plants in this division have a vascular system and reproduce using spores.
  20. 42. Animal phylum made up of jellyfish, sea anemones and coral polyps.
  21. 43. Class of Chordata that give birth to live young, produce milk for their young, and are covered in hair.
Down
  1. 1. One of the divisions of the Plant Kingdom; mosses and _____________.
  2. 2. A class of plants that have separate male and female trees.
  3. 4. Organisms in this kingdom are single-celled and may be plant or animal like.
  4. 6. Animal phylum, commonly known as sponges.
  5. 7. Example of an organism found in Kingdom Monera.
  6. 9. Animal phylum, commonly known as starfish.
  7. 11. Class of Chordata known as 'bony fish'.
  8. 13. The plant subclass that has a pair of seed leaves, and branching veins in their leaves.
  9. 14. Animal phylum, commonly known as flatworms.
  10. 17. Class of Chordata that lay eggs, are endothermic and covered in feathers.
  11. 20. Animal phylum, commonly known as round worms.
  12. 22. A class of plants that contains only one living species.
  13. 23. Plants that reproduce using seeds.
  14. 24. Animal phylum containing insects, scorpions, spiders and crustaceans.
  15. 26. Organisms in this kingdom all contain chlorophyll and are able to photosynthesize.
  16. 27. The class of plants that contains flowering plants.
  17. 29. Example of an organism found in Kingdom Fungi.
  18. 30. Name given to an internal skeleton.
  19. 33. Term meaning an animal can generate it's own body heat.
  20. 34. A class of plants that produces male and female cones on the same tree.
  21. 37. Class of Chordata that lay eggs, are ectothermic and have dry, scaly skin.
  22. 39. Class of Chordata known as 'jawless fish'.