06Exam_3A - Biol 119 General Biology II Exam No. 3A April...

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Biol 119 – General Biology II April 10, 2006 Exam No. 3A Multiple Choice Questions – Mark the correct answer on the scantrons ~ 2.3 pts. each 1. To biologists, the protists comprise all eukaryotes other than which groups? a. extinct forms b. green plants, fungi, and animals c. multicellular forms d. those with cells containing a cytoskeleton and nucleus 2. Protists are alike in that all are a. multicellular b. photosynthetic c. marine d. nonparasitic e. eukaryotic 3. Which organisms represent the common ancestor of all photosynthetic plastids found in eukaryotes? a. autotrophic euglenids b. diatoms c. dinoflagellates d. red algae e. cyanobacteria 4. The evolution of eukaryotes from prokaryotes probably a. occurred many times. b. involved endosymbiosis on multiple occasions. c. allowed for the formation of both complexity and multicellularity. d. B and C only e. A, B, and C 5. Which of the following marine organisms produce potent neurotoxins that cause extensive fish kill, contaminate shellfish, and create severe respiratory irritation to humans along the shore? a. red algae b. dinoflagellates c. diplomonads d. euglenids e. golden algae
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6. One of the major distinctions between plants and the green algae is that a. only green algae have flagellated, swimming sperm. b. embryos are not retained within parental tissues in green algae. c. meiosis proceeds at a faster pace in green algae than in other plants. d. chlorophyll pigments in green algae are different from those in green plants. e. only plants form a cell plate during cytokinesis. 7. Which of the following is characteristic of alternation of generation in land plants? a. Haploid sporophytes make haploid spores. b. Gametophytes produce spores that develop into gametes. c. Sporophytes and gametophytes are typically similar in appearance. d. Meiosis in sporophytes produces haploid spores. e. Either the gametophyte or sporophyte is unicellular 8. Bryophytes have all of the following characteristics except a. multicellularity. b. specialized cells and tissues. c. lignified vascular tissue. d. walled spores in sporangia. e. a reduced, dependent sporophyte 9. Which event during the evolution of land plants probably made the synthesis of secondary compounds most beneficial? a. the greenhouse effect present throughout the Devonian period. b. the reverse-greenhouse effect during the Carboniferous period c. the association of the roots of land plants with fungi d. the rise of herbivores e. the rise of wind pollination 10. A botanist discovers a new species of plant in a tropical rain forest. After observing its anatomy and life cycle, the following characteristics are noted: flagellated sperm, xylem with tracheids, separate gametophyte and sporophyte generations, and no seeds. This plant is probably most closely related to
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06Exam_3A - Biol 119 General Biology II Exam No. 3A April...

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