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ch13 - Chapter 13 Plant Form and Function How Do Plants...

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Chapter 13 Plant Form and Function: How Do Plants Live in the World? 1. What molecule was conspicuously absent from Earth's early atmosphere? a. water b. nitrogen gas c. oxygen gas d. carbon dioxide e. methane Ans: c 2. The first eukaryotic cells were probably formed when 3. The first eukaryotic cells were probably ______. 4. A cell with the ability to provide its own organic food by extracting energy from inorganic acids is a(n): 232
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Chapter 13 5. Which group of early photosynthesizers generated oxygen? a. anaerobic photoautotrophs b. anaerobic heterotrophs c. aerobic heterotrophs d. cyanobacteria e. abiotic heterotrophs Ans: d 6. Which of the following is a difference between eukaryotes and prokaryotes? 7. What is the name of the transparent cell layer on a plant's outer surface that helps to retard water loss? 8. The cuticle is: 233
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Chapter 13 9. You go on a hike and see a plant that has a conspicuous gametophyte generation. It is small and low to the ground and seems to have no vascular tissue. What might it be? I. a bryophyte II. an evergreen III. a moss IV. angiosperm a. I and II b. I and III c. I and IV d. II and III e. II and IV Ans: b
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