1.2 CLASSIFICATION OF ORGANISMS

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Across
  1. 2. A body that is divided into several sections is described as this.
  2. 5. Having a body temperature that remains relatively constant.
  3. 7. Vertebrates that can live both on land and in water.
  4. 9. A body covering that helps birds maintain their body temperature.
  5. 12. An invertebrate without legs and without a segmented body that has a shell.
  6. 13. A flowering plant whose seed has only one cotyledon.
  7. 15. Plants that produce flowers which later develop into fruits containing seeds.
  8. 16. The respiratory organs used by young amphibians to breathe.
  9. 18. Animals that have a backbone.
  10. 19. A method used to identify and classify organisms systematically based on their similarities and differences.
  11. 21. An example of a legless invertebrate with a segmented body.
  12. 23. Animals that do not have a backbone.
  13. 24. Vertebrates with scales and hard skin that breathe through lungs.
Down
  1. 1. Homeothermic vertebrates that are covered with feathers.
  2. 2. An example of an invertebrate without legs and without a segmented body.
  3. 3. An invertebrate without legs that has a segmented body.
  4. 4. A flowering plant whose seed has two cotyledons.
  5. 6. Homeothermic vertebrates that have fur or hair and nurse their young.
  6. 8. Having a body temperature that changes according to the surrounding temperature.
  7. 10. A hard outer shell that protects the body of some invertebrates.
  8. 11. A vascular non-flowering plant that reproduces by producing cones.
  9. 14. Stored food in a seed that is used during germination.
  10. 17. An invertebrate with three pairs of legs and wings.
  11. 20. A non-flowering and non-vascular plant that reproduces by spores.
  12. 22. A vascular non-flowering plant that reproduces by spores.