Chapter 1-2

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Across
  1. 1. living or within a bottom marine substance
  2. 4. a phenomenon of having linear series of body segments
  3. 9. this swedish biologist devised a system still used today for naming organism
  4. 10. english anatomist
  5. 11. known as roundworm
  6. 13. the greatest extinction
  7. 18. features with a similar funtion
  8. 19. the change in the characteristics of a species
  9. 22. pulposus jelly-like material that consists of mainly water
  10. 24. deals with the processes of fossilization
  11. 25. known as the Tunicata
  12. 27. a distinctive embryonic process
  13. 28. a phylum of very small to microscopic marine cycloneuralian
  14. 29. the sides,right and left
  15. 30. fossil extant taxon that closely resembles organisms
  16. 31. distance below the surface
  17. 33. the parts with regard to the foregoing axes and planes
  18. 35. jawless fish in the phylum chordata
  19. 36. theory of biological evolution developed by the English naturalist Charles Darwin
  20. 37. the body cavity in metazoans
  21. 38. living together or by group
  22. 40. similar structure and arrange in series metamoric parts
Down
  1. 2. marine invertebrate animal
  2. 3. a flexible, hollow tube found in hemichordates
  3. 5. the middle
  4. 6. a method of hypothesizing relationships among organisms
  5. 7. a british naturalist,explorer,geographer,antrhopologist,bioogist and illustrator
  6. 8. animal with a spinal cord surrounded by cartilage or bone
  7. 12. weak pumps,ineffective against gill resistance
  8. 14. aerodynamic contouring of body shape
  9. 15. literaly meaning "first mouth"
  10. 16. applies two or more features
  11. 17. a genus of sea squirts
  12. 20. the middle
  13. 21. comparison between two things, typically for the purpose of explanation or clarification
  14. 23. the back or upper part
  15. 26. a phylum of very small to microscopic marine
  16. 32. arrange sequentially along the adult body and tail
  17. 34. he process by which a gastrula forms from a blastula
  18. 39. he pursued administratived duties and studies in paleontology