Week 10 review

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Across
  1. 2. outermost germ layer (epidermis nad nervous tissue develop from this)
  2. 4. body plan with adult structures arising from only two cell layers (endoderm and mesoderm)
  3. 7. middle layer of three germ layers (muscular, skeletal, vascular, and connective tissues develop from this).
  4. 12. grouping of animal species without tissues
  5. 14. indicating the tail end of an animal
  6. 15. animals
  7. 18. innermost germ layer that develops into the GI tract, and respiratory organs in some animals
  8. 19. body plan having three primary germ layers
  9. 22. animal without a vertebral column
  10. 24. indicating the belly side of an animal
  11. 25. a haploid cell, (an egg or sperm)
Down
  1. 1. thin tissue derived from mesoderm that lines the abdominal wall and covers most organs in the abdomen
  2. 3. vertebrates are members of this phylum
  3. 5. animals with a body cavity lacking a complete lining derived from mesoderm
  4. 6. developement of na anterior end with a high concentration of sensory organs and nervous system tissue
  5. 8. animals lacking a body cavity between the gut and the body wall
  6. 9. indicating the back side of an animal
  7. 10. a group of cells and intercellular substances with the same structure that funciton as a unit to carry out one or more specialized tasks.
  8. 11. a fluid-filled body cavity in bilaterally symmetrical animals htat is completely lined with derivatives of mesoderm.
  9. 13. indicating the head end of an animal
  10. 16. a fertilized egg
  11. 17. capable of self-propelled movement
  12. 20. acquires energy and nutrients by eating other organisms or their remains
  13. 21. grouping of animal species with tissues
  14. 23. unable to move from one place to another