Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
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1. |
The kingdom Protista contains the eukaryotes that are not plants, animals, or fungi. _________________________
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2. |
Sexual reproduction with spores evolved in protists. _________________________
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3. |
Tissues, organs, and organ systems evolved in unicellular protists. _________________________
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4. |
Sexual reproduction allows Chlamydomonas to delay development of new organisms until environmental conditions are favorable. _________________________
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5. |
Amoebas move by means of pseudopodia. _________________________
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6. |
Diatoms are the only type of protists with single shells. _________________________
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7. |
Paramecium takes in food through its contractile vacuole. _________________________
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8. |
Cellular slime molds form a mass of cytoplasm that has many nuclei. _________________________
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9. |
Protists have an important effect on humans because they cause disease. _________________________
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10. |
Malaria is caused by the protist Plasmodium and is spread by the bite of certain fleas. _________________________
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11. |
Carrageenan is a product made by protists that is used to flavor many food products. _________________________
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Multiple Choice
Identify the choice that best completes the statement or answers the question.
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12. |
Which of the following is not true about some or all protists?
a.
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unicellular and heterotrophic |
c.
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multicellular and autotrophic |
b.
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unicellular and autotrophic |
d.
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multicellular and prokaryotic |
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13. |
The kingdom Protista does not include
a.
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most of the single-celled eukaryotes. |
c.
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multicellular seaweed. |
b.
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slime and water molds. |
d.
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prokaryotes. |
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14. |
Which of the following characteristics did not evolve in the Kingdom Protista?
a.
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unicellularity |
c.
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membrane-bound organelles |
b.
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gametes |
d.
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complex cilia and flagella |
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15. |
sexual reproduction : diversity ::
a.
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flagella : cilia |
c.
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green algae : flagella |
b.
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multicellularity : tissues |
d.
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unicellularity : protists |
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16. |
Eukaryotes that lack the features of animals, plants, or fungi are classified in the kingdom
a.
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Archaebacteria. |
c.
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Protista. |
b.
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Plantae. |
d.
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Animalia. |
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17. |
You have been given an unknown organism to identify. You find that it is unicellular and has a cell wall. Which of the following must it also have?
a.
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chloroplasts |
c.
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pseudopodia |
b.
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asexual reproduction |
d.
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one or more flagella |
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18. |
When Chlamydomonas reproduces sexually, it divides by mitosis, producing
a.
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zygospores. |
c.
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haploid gametes. |
b.
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diploid gametes. |
d.
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zoospores. |
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19. |
Zoospores are
a.
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produced as a result of meiosis. |
c.
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produced as a result of mitosis. |
b.
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diploid. |
d.
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all parasitic. |
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20. |
The haploid, gamete-producing phase in the life cycle of some multicellular protists is known as the
a.
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zygospore generation. |
c.
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conjugation generation. |
b.
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gametophyte generation. |
d.
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sporophyte generation. |
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21. |
The marine green alga Ulva reproduces sexually by
a.
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alternation of generations. |
c.
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mitosis. |
b.
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conjugation. |
d.
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aggregation. |
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22. |
Pseudopodia are used for
a.
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Paramecium conjugation. |
c.
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Euglena reproduction. |
b.
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movement by amoebas. |
d.
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Paramecium mitosis. |
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23. |
Amoebas capture food by
a.
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engulfing it. |
c.
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trapping it with flagella. |
b.
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using cilia. |
d.
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taking it into an oral groove. |
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24. |
When an individual diatom gets too small because of repeated division, it
a.
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grows to full size in its existing shell. |
b.
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slips out of its shell, grows to full size, and regenerates a new shell. |
c.
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slips out of its shell, grows to full size, and reinhabits its old shell. |
d.
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slips out of its shell and lives the rest of its life without a shell. |
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25. |
Algae are
a.
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sometimes heterotrophic. |
b.
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always microscopic in size. |
c.
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found in fresh water, salt water, and damp soil. |
d.
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found only in fresh water. |
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26. |
Red algae
a.
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are multicellular. |
c.
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have eyespots. |
b.
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are unicellular. |
d.
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have double shells. |
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27. |
Euglenoids are examples of protists that
a.
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can be both autotrophic and heterotrophic. |
b.
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are only parasitic heterotrophs. |
c.
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are always autotrophic. |
d.
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swim away from light. |
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28. |
dinoflagellates : flagella ::
a.
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amoebas : pseudopodia |
c.
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ciliates : pseudopodia |
b.
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sporozoans : flagella |
d.
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amoebas : flagella |
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29. |
The process in which two Paramecia come together to exchange parts of their genetic material is called
a.
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mitosis. |
c.
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pollination. |
b.
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replication. |
d.
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conjugation. |
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30. |
Refer to the illustration above. Excess water in the body of the Paramecium is forced back out by the structure labeled
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31. |
Refer to the illustration above. The structure that contains the cell’s chromosomes is labeled
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32. |
Refer to the illustration above. Structure C is the
a.
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macronucleus. |
c.
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oral groove. |
b.
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contractile vacuole. |
d.
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micronucleus. |
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33. |
Refer to the illustration above. The structure that controls routine cellular functions is labeled
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34. |
Funguslike protists reproduce by releasing
a.
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gametes. |
c.
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zoospores. |
b.
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spores. |
d.
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plasmodia. |
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35. |
Giardiasis is a disease that is spread
a.
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by direct person-to-person contact. |
c.
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through contaminated water. |
b.
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through the air. |
d.
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by the Anopheles mosquito. |
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36. |
Chagas disease is spread by
a.
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kissing bugs. |
c.
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contaminated food. |
b.
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mosquitoes. |
d.
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contaminated water. |
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37. |
Which of the following is not a human disease caused by a protist?
a.
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amebic dysentery |
c.
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malaria |
b.
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toxoplasmosis |
d.
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tuberculosis. |
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38. |
giardiasis : contaminated water ::
a.
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amebic dysentery : mosquito |
c.
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malaria : mosquito |
b.
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amebic dysentery : giardiasis |
d.
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malaria : food contamination |
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39. |
The protist that causes malaria reproduces in the
a.
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intestine of a human. |
c.
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red blood cells of a human. |
b.
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red blood cells of a mosquito. |
d.
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stinger of a mosquito. |
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40. |
Malaria is caused by several species of
a.
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Toxoplasma. |
c.
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Giardia. |
b.
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Phytophthora. |
d.
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Plasmodium. |
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41. |
The stage in the life cycle of Plasmodium in which it lives in mosquitoes and is injected into humans is called the
a.
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gametophyte. |
c.
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sporophyte. |
b.
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sporozoite. |
d.
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zoospore. |
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42. |
Symbiotic protists live in all of the following organisms except
a.
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termites. |
c.
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cattle. |
b.
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corals. |
d.
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bacteria. |
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43. |
Protists that play an important role in aquatic food webs are called
a.
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plankton. |
c.
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anchovies. |
b.
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lichens. |
d.
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cyanobacteria. |
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44. |
The evolution of the plant kingdom can be inferred by studying
a.
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green algae. |
c.
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red algae. |
b.
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brown algae. |
d.
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dinoflagellates. |
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45. |
A mass of cytoplasm that has many nuclei is a(n)
a.
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spore. |
c.
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colony. |
b.
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plasmodium. |
d.
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amoeba. |
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46. |
A protist that almost destroyed the entire potato crop in Ireland in 1846 is a
a.
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plasmodial slime mold. |
c.
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dinoflagellate. |
b.
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cellular slime mold. |
d.
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water mold. |
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47. |
A downy mildew gets nutrients by
a.
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photosynthesis. |
b.
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absorbing them from the environment. |
c.
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making them from inorganic chemicals. |
d.
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making them from organic building blocks. |
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48. |
When an algal bloom dies, the bacteria that decompose the algae
a.
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deplete carbon dioxide levels in the water. |
b.
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kill the plankton population. |
c.
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deplete oxygen levels in the water. |
d.
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kill fish. |
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49. |
A protist used by scientists to study cell movement and cell signaling is a
a.
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dinoflagellate. |
c.
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paramecium. |
b.
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diatom. |
d.
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slime mold. |
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50. |
Agar is a product used to grow bacteria. Agar comes from
a.
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bacteria. |
c.
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diatoms. |
b.
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algae. |
d.
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amoebas. |
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Completion
Complete each statement.
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51. |
Two important features that evolved in the protists were multicellularity and sexual reproduction with the production of ____________________.
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52. |
The evolution of ____________________ allowed single-celled organisms to perform many functions at the same time.
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53. |
When ______________________________ evolved, protists could become genetically diverse.
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54. |
Although protists are diverse, they are all ____________________.
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Life Cycle of Chlamydomonas
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55. |
Refer to the illustration above. Arrow B is pointing to a ____________________ in the life cycle.
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56. |
Refer to the illustration above. Arrow A is pointing to ____________________ in the life cycle.
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57. |
According to the illustration above, Chlamydomonas reproduces both sexually and ____________________.
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58. |
Some protists undergo sexual reproduction only at times of environmental ____________________.
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59. |
Ulva is characterized by two distinct multicellular phases: a diploid, spore producing phase called the ____________________ generation and a haploid, gamete-producing phase called the ____________________ generation.
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60. |
Refer to the illustration above. The organism shown in A moves and obtains food by means of ____________________.
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61. |
Refer to the illustration above. The organism shown in C moves by means of ____________________.
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62. |
Refer to the illustration above. The organism shown in B moves by means of ____________________.
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63. |
Some amoeboid protists have porous shells called ____________________.
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64. |
____________________ have double shells that resemble small boxes with lids.
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65. |
The large brown algae that grow along coasts are called ____________________.
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66. |
Protists that are strict photoautotrophs are called ____________________.
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67. |
Poisonous “red tides” are caused by population explosions of ____________________.
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68. |
Brown algae are the only algae that form more than one kind of ____________________.
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69. |
Some protists have ____________________ that contain light-sensitive pigments.
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70. |
____________________ disease is a protist-caused disease that is transmitted by kissing bugs.
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71. |
Disease-causing protists are transmitted mainly by insects or by contaminated ____________________ and ____________________.
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72. |
The stage of Plasmodium that infects the liver is called the ____________________; the second stage of the Plasmodium life cycle, which infects red blood cells, is called the ____________________.
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73. |
Plantlike protists produce ____________________, which allows most forms of life to live on Earth.
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74. |
____________________ are related to green algae and are thought to have evolved from them.
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75. |
Funguslike protists resemble fungi in that they reproduce with ____________________ and they ____________________ nutrients from their environment.
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76. |
Cellular slime molds usually exist as single-celled amoebas, but they form ____________________ and release ____________________ when food or water is scarce.
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77. |
A water mold caused the great potato famine in ____________________ in 1846.
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78. |
The empty shells of diatoms are used as ____________________ in cleaning agents.
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79. |
Red algae produce carrageenan, which is used in the food industry to ____________________ foods such as ice cream and salad dressings.
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