Lecture Exam 3 Terms

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Across
  1. 2. phylum consisting of vertebrates
  2. 5. mammals that lay eggs
  3. 8. monophyletic group distinguished by overlapping scales
  4. 9. putting others' well-being before one's own
  5. 12. undergoing complete metamorphosis
  6. 13. clade comprised of reptiles, birds, and mammals
  7. 14. developmental stage characterized by the induction of the 3 germ layers
  8. 15. small phylum comprising of virtually indestructible micro-organisms
  9. 17. outermost germ layer
Down
  1. 1. comprised of 3 germ layers
  2. 3. genetics system whereby fertilized eggs generate females while unfertilized eggs generate males
  3. 4. skeletal support rod
  4. 6. mammals that birth underdeveloped offspring
  5. 7. comprised of 2 germ layers
  6. 10. likely representative of the evolutionary transition from water (fish) to land (reptiles)
  7. 11. cell type with a flagella surrounded by a "collar" of microvilli
  8. 16. body cavity containing intestines and most organs