BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 29, Problem 1S
You have access to the sequenced genomes for moss and the lycophyte selaginella. Your goal in analyzing the data is to write a groundbreaking paper that answers an important question about the evolution of land plants. What question would you try to answer1
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What can scientists analyze to get a better understanding of how plants and animals evolved a common ancestor? (1
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Which derived characteristic would MOST likely explain the results from the genome analysis?
A.
appearance of vascular tissue
B.
appearance of pollen
C.
appearance of monocots and dicots
D.
appearance of flowers
Comparison of Lignin-Associated Genes Across Photosynthetic Organisms
In a study comparing the genomes of photosynthetic organisms, scientists identified genes specific to the synthesis of lignin. The resulting data are presented in the table.
Organism
Group
Approximate number of genes associated with an enzyme unique to lignin biosynthesis
Phaeodactylum
Diatoms
0
Volvox
Green algae
0
A moss
Bryophytes
12
Spike moss
Lycophytes
38
Rice
Monocots
55
Poplar tree
Dicots
53
Chapter 29 Solutions
BIOLOGY
Ch. 29.1 - Explain the relationship between the different...Ch. 29.1 - Prob. 2LOCh. 29.1 - Prob. 3LOCh. 29.1 - Prob. 4LOCh. 29.2 - Describe adaptations of bryophytes for life on...Ch. 29.3 - Prob. 1LOCh. 29.3 - Evalute the signification of roots, stems, and...Ch. 29.4 - Prob. 1LOCh. 29.4 - Prob. 2LOCh. 29.5 - Prob. 1LO
Ch. 29.5 - Prob. 2LOCh. 29 - Compare the amount of time that passed between the...Ch. 29 - Explain why tracheophytes may have had a selective...Ch. 29 - Which of the following plant structures is NOT...Ch. 29 - Which of the following genera most likely directly...Ch. 29 - Which of the following would NOT be found in a...Ch. 29 - Prob. 4UCh. 29 - Evolutionary innovations that increase desiccation...Ch. 29 - Which of the following statements about the...Ch. 29 - Compare what happens to a spore mother cell as it...Ch. 29 - How could a plant without roots obtain sufficient...Ch. 29 - A major innovation of land plants is embryo...Ch. 29 - In comparing the Selaginella and Physcomitrella...Ch. 29 - Prob. 5ACh. 29 - Identify which of the following statements is...Ch. 29 - You have access to the sequenced genomes for moss...Ch. 29 - Would you expect the sporophyte generation of a...Ch. 29 - Imagine hypothetical moss and fern trees, each 10...
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- Explain how arborscent lycopods and horsetails are to vascular plant evolution what dinosaurs are to vertebrate evolution.arrow_forwardThe production of megaphylls by many different species of plants is an example of _____. a. parallel evolution b. analogy c. divergent evolution d. homologyarrow_forwardWhat could be the link between the land-plants with the emergence of photosynthetic protists, algae? Could algae be the ancestor of plant? Justify your answer.arrow_forward
- How does artificial selection differ from natural selection? Do you think the ancestors of lettuce had such soft, nonbitter leaves? Could today’s lettuce plants survive in natural conditions?arrow_forwardSuppose that plants in the San Francisco Bay area and in southern Chile share a common seed dispersal method. Scientists determine that the evolutionary divergence of these plants happened long before this seed dispersal method arose in each plant. What term relates the seed dispersal method of the San Francisco Bay plant to the seed dispersal method of the southern Chile plant? Explain your answer.arrow_forwardEvaluate the following statements about seeds from two biology textbooks: I. The seed coat is an adaptation that protects the plant embryo from damage, water loss, and infection. II. Evolution has come up with a clever solution for protecting plant embryos: seed coats that prevent damage, water loss, and infection. Do these statements accurately represent the evolution of seeds? a) Yes, both statements are accurate. b) No, neither statement is accurate. c) Only the first statement is accurate.arrow_forward
- A consortium of dairy and beef farmers has hired you to study the evolutionary origins of domestic cattle. They particularly want to know whether the humped zebu cattle of Asia and the cattle of Africa are derived from different species of wild cattle than European breeds. Outline a complete research program to study this question. Describe the sequence of steps you would need to do, what kind of data you would collect, and the methods you could use to evaluate possible trees and branches.arrow_forwardWhich of the following observations would provide the strongest evidence that two plants belong to different biological species? a.The leaves and flowers show morphological differences. b.There are variations in their RNA sequences. c.They produce viable but sterile offspring. d.They occupy unique habitats in an ecosystem.arrow_forwardPlants made the leap from water to land during the late Ordovician period (we think). In order to make it, various physical obstacles had to be overcome. Choose one adaptation and explore it further. What evidence do we have of this change? Are there specific fossils of plants that exhibit it? How do we think it may have developed? Not all of these changes occurred at the exact same time. Was your chosen adaptation one of the first or late to the game? including references are appreciated.arrow_forward
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