ECOL_182_Exam2

ECOL_182_Exam2 - MIDTERM EXAM 2 Robichaux Section 6 March...

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1 MIDTERM EXAM 2 Robichaux Section 6 March 2008 YOUR NAME: ____________________________________________________________ Last name First name YOUR UA NetID: ______________________________ YOU MUST CHOOSE THE SINGLE BEST ANSWER FOR EACH QUESTION. YOU MUST USE A NUMBER 2 PENCIL . 1. Plants a. have cell walls containing cellulose. b. have starch as their principal photosynthetic storage product. c. are multicellular, autotrophic organisms. d. all of the above. e. a and c, but not b. 2. The trait exhibited by plants that distinguishes them from other groups of photosynthetic eukaryotes, such as various lineages of “green algae”, is that a. plants have chloroplasts. b. plants have zygotes that develop into embryos that are protected by parental tissues. c. plants have chlorophylls a and b . d. none of the above. 3. As discussed in lecture, there is strong evidence that the ancestors of plants belong to the a. gametophyte lineage. b. tracheophyte lineage. c. charophyte lineage. d. pteridophyte lineage. 4. Based on the discussion in lecture, which of the following is NOT a key evolutionary innovation characterizing the diversification of plants? a. evolution of flowers, carpels, and endosperm b. evolution of specialized conducting cells called tracheids c. evolution of cell walls d. evolution of seeds 5. In sexual life cycles involving the alternation between haploid and diploid phases a. the product of fertilization is a haploid zygote. b. meiosis gives rise to the haploid phase. c. the gametes are diploid. d. all of the above. e. b and c, but not a. 6. Which of the following statements about mosses is FALSE? a. Mosses produce seeds. b. In the moss life cycle, the multicellular sporophyte is completely dependent for its nutrition on the multicellular gametophyte. c. In the moss life cycle, the multicellular gametophyte is photosynthetic. d. Mosses lack tracheids.
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2 7. Which of the following statements about ferns is FALSE? a. In the fern life cycle, the multicellular gametophyte is typically small, delicate, and short-lived. b. Ferns lack tracheids. c. In the fern life cycle, both the multicellular gametophyte and multicellular sporophyte are photosynthetic and free-living. d. In the fern life cycle, the multicellular sporophyte is larger and much longer-lived, and is what we typically see when we observe ferns in the field. 8. Which of the following statements about gymnosperms is FALSE? a. In the gymnosperm life cycle, the multicellular sporophyte is completely dependent for its nutrition on the multicellular gametophyte. b. Gymnosperms produce two distinct types of haploid spores that give rise via mitosis to multicellular male and female gametophytes, respectively. c.
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This note was uploaded on 04/29/2008 for the course ECOL 182r taught by Professor Schaffer during the Spring '08 term at Arizona.

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ECOL_182_Exam2 - MIDTERM EXAM 2 Robichaux Section 6 March...

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