Protists

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Across
  1. 1. caused the potato blight
  2. 2. all are parasites of animals, & some cause serious diseases
  3. 5. organism hosts parasite
  4. 6. a dinoflagellate that causes fish kills
  5. 8. causes amebic dysentery
  6. 13. have modified mitochondria, use anaerobic pathways
  7. 15. named for their grass-green chloroplasts
  8. 17. are descended from green algae
  9. 19. amoeba that have lobe or tube shaped pseudopodia
  10. 20. organism that carries the parasite from one host to another
  11. 23. have one or two flagella that emerge from a pocket at end of cell
  12. 24. reduced mitochondria that generate some energy anaerobically
  13. 25. have a single mitochondrion with an mass of DNA, kinetoplast
  14. 27. symbiotic organisms formed by interaction between green algae & fungus
  15. 28. polysaccharides extracted from the cell walls of some red algae
  16. 29. most closely related to land plants
  17. 30. causes sleeping sickness
  18. 32. organism in which the parasite completes sexual reproduction
  19. 34. the symbiont harms but usually does not kill its host
  20. 35. can detect trichomonas
  21. 36. both the symbiont & host benefit from the relationship
  22. 37. microscopic aquatic photosynthetic organisms
  23. 38. many are parasites of vertebrates and some invertebrates
  24. 39. combine photosynthesis & heterotrophic nutrition
Down
  1. 1. pigment that gives red algae its colour
  2. 3. protists that absorb organic molecules
  3. 4. large varied group of protists, use cilia to move and feed
  4. 7. evade immune responses by switching surface proteins
  5. 9. the symbiont benefits while neither harming nor benefiting host
  6. 10. include some important human & animal parasites
  7. 11. protists that contain chloroplasts
  8. 12. contains a complex of organelles specialized for penetrating host cells
  9. 14. the largest and most complex algae
  10. 16. are a paraphyletic group
  11. 18. digest cellulose in the gut of termites
  12. 21. protists are also referred to as:
  13. 22. unicellular algae with two-part wall of silicon dioxide
  14. 26. nourish coral polyps that build reefs
  15. 31. appeared about 2 bya
  16. 33. causes malaria