Campbell Biology: Concepts and Connections (Custom Package)
8th Edition
ISBN: 9781269717403
Author: Central Texas
Publisher: PEARSON
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Chapter 15, Problem 10TYK
Summary Introduction
Introduction:
Eras and periods are separated by major transitions in life-forms, often caused by extinctions. The geological record is established is based on the sequence and ages of rocks and fossils.
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Chapter 15 Solutions
Campbell Biology: Concepts and Connections (Custom Package)
Ch. 15 - Using the figure below, describe the stages that...Ch. 15 - Fill in this concept map about systematics.Ch. 15 - Prob. 3TYKCh. 15 - Prob. 4TYKCh. 15 - Prob. 5TYKCh. 15 - Adaptive radiations may be promoted by all of the...Ch. 15 - A swim bladder is a gas-filled sac that helps fish...Ch. 15 - Prob. 8TYKCh. 15 - Which of the following could provide the best data...Ch. 15 - Prob. 10TYK
Ch. 15 - Distinguish between microevolution and...Ch. 15 - Which are more likely to be closely related: two...Ch. 15 - How can the Darwinian concept of descent with...Ch. 15 - Explain why changes in the regulation of...Ch. 15 - Prob. 15TYKCh. 15 - Measurements indicate that a fossilized skull you...Ch. 15 - Prob. 17TYKCh. 15 - SCIENTIFIC THINKING When Stanley Millers...
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- Which of the following events occurred first in eukaryotic evolution? a. Endosymbiosis and mitochondria evolution b. Endosymbiosis and chloroplast evolution c. Compartmentalization and formation of the nucleus d. Formation of multicellular organismsarrow_forwardWhich of these steps probably occurred first in the chemical andbiological evolution of life?a. The cell membrane of a protobiont formed.b. The first organic molecules formed.c. The original genetic material was RNA.d. Simple organic monomers formed from inorganic materials.arrow_forwardFossilized stromatolites(A) formed around deep-sea vents.(B) resemble structures formed by bacterial communities that are found today in some shallowmarine bays.(C) provide evidence that plants moved onto landin the company of fungi around 500 million years ago.(D) contain the first undisputed fossils of eukaryotes.arrow_forward
- An analysis of a phylogeny that displays data about the fossil record over time reveals all of the following EXCEPT A. Several extinction events occurred. B. Evolution results in a clear directional pattern. C. Evolution is the result of interactions between organisms and their environment. D. Evidence of continental drift exists.arrow_forwardDuring the Early _______________, life consisted of prokaryotic cells, but by the end of this geologic time span, multicellular eukaryotic organisms had evolved. (a) Cenozoic era (b) Paleozoic era (c) Mesozoic era (d) Archaean eon(e) Proterozoic eonarrow_forwardWe live in the Cenozoic era, and scientists know more about this era and the epochs it’s divided into than any other time period. Why is this? A. We know more about the Cenozoic era because this is the only era that has had a wide diversity of species living on Earth. B. We know more about the Cenozoic era because this is the most recent time period in the history of the Earth, and we have more information available to study. C. We know more about the Cenozoic era because the planet’s poles reversed magnetic fields at the beginning of this era. D. We know more about the Cenozoic era because fossils don’t exist to document previous eras.arrow_forward
- What event is thought to have contributed to the evolution of eukaryotes? a. global warming b. glaciation c. volcanic activity d. oxygenation of the atmospherearrow_forwardWhich bits of evidence would convince you that life originated as early as 3.2 bya? a. You look at a microfossil under a scanning electron microscope and it is the same shape as a cell. b. A high-quality transmission electron micrograph of a fossil cell reveals cellular compartments, including a possible nucleus. c. Potassium dating of a fossil containing a possible cell indicates that the fossil is 3.2 billion years old. d. Using transmission and scanning electron microscopy, you find evidence of a carbon-based material in what appears to be a cell wall of a fossil isotopically dated as 3.2 billion years old.arrow_forwardThe endosymbiotic theory explains the:a. origin of the first prokaryotic cells.b. origins of mitochondria and chloroplasts in eukaryotes.c. evolutionary relationship between animals, plants, and fungi.d. method of reproduction in protists.arrow_forward
- ______ is a way of reconstructing evolutionary history based on derived characters. a. Cladistics c. Convergent evolution b. Linnaean taxonomy d. Divergent evolutionarrow_forwardWhy is the classification of protists based on DNA sequences useful? * a. Because only protists have DNA b. Because it has confirmed the traditional categories for protists c. Because it has revealed evolutionary relationships, even among organisms that look diffferent d. All of the above are correct This is a required question (2) Why is a species with small population more likely than one with a large population to undergo an extinction? * a. Because small population are exposed to greater environmental changes b. Because genetic diversity is likely to be lower in a small population c. Because the mutation rate is too low d. Because they take too long to produce an offspring.arrow_forwardWhich of the following terms most specifically describes what occurs when a group of organisms expands to take on new ecological roles, forming new species and higher taxonomic groups in the process? (a) speciation (b) mass extinction (c) evolution (d) adaptive radiationarrow_forward
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