Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 25.1, Problem 1CC
Describe major events in the evolution of early eukaryotes that are documented in the fossil record.
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Chapter 25 Solutions
Campbell Biology in Focus
Ch. 25.1 - Describe major events in the evolution of early...Ch. 25.1 - Explain why eukaryotes are said to be combination...Ch. 25.1 - Prob. 3CCCh. 25.2 - Summarize the evidence that choanoflagellates are...Ch. 25.2 - MAKE CONNECTlONS Describe how the origin of...Ch. 25.2 - Prob. 3CCCh. 25.3 - Briefly describe the organisms found in each of...Ch. 25.3 - MAKE CONNECTIONS Review Figures 7.2 and 8.5...Ch. 25.3 - Prob. 3CCCh. 25.3 - Prob. 4CC
Ch. 25.4 - Justify the claim that photosynthetic protists are...Ch. 25.4 - Prob. 2CCCh. 25.4 - Prob. 3CCCh. 25 - The oldest fossil eukaryote that can be resolved...Ch. 25 - Prob. 2TYUCh. 25 - Plastids that are surrounded by more than two...Ch. 25 - Prob. 4TYUCh. 25 - Prob. 5TYUCh. 25 - Based on the phylogenetic tree in Figure 25.10,...Ch. 25 - MAKE CONNECTIONS The bacterium Wolbachia is a...Ch. 25 - FOCUS ON EVOLUTION DRAW IT Medical researchers...Ch. 25 - FOCUS ON INTERACTIONS Organisms interact with each...Ch. 25 - SYNTHESIZE YOUR KNOWLEDGE These micrographs show...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Describe two reasons why it is important to society to study phylogeny and systematics.arrow_forwardIn what way was the evolution of eukaryotic cells linked to the increase in the oxygen concentration in the atmosphere that occurred during the Precambrian?arrow_forwardIdentify the two characteristics that originally definedprokaryotes.arrow_forward
- What do the multiple branching points at the root of the eukaryotic phylogenetic tree indicate about the evolution of eukaryotes? A. that unikonts are derived from the SAR clade B. that Archaeplastids were the first eukaryotes C. that fungi are more closely related to plants than animals D. that eukaryotes are all descended from a common ancestorarrow_forwardWhy are embryological features important for distinguishing the major groups of phyla?arrow_forwardDiscuss two synapomorphies of organisms belonging to the Supergroup Chromalveolataarrow_forward
- How are forams useful for researchers to study changes in ocean temperature over time? What are mixotrophs? What is endosymbiosis and why is it consider to be the source of eukaryotic diversity? Why are we confident this only happens once? What is primary and secondary endosymbiosis? Was there another endosymbiotic event that led to a third lineage? What group of organisms possesses a structure that might suggest this possibility and what is the structure? Why is the structure question different from the ancestor of other plastids? What are diatom blooms and why are they of particular interest to climate change scientists?arrow_forwardDescribe some of the hypotheses on the origin of life and the characteristics of early prokaryotes, eukaryotes, and multicellular organisms.arrow_forwardCompare the phylogenetic tree of protists with the secondary endosymbiosis theory which proposes how photosynthetic protists evolved. Are both reconcilable? Explain.arrow_forward
- As we have discussed in class, phylogenies are hypotheses, and can therefore change over time with new evidence. Relatively recent and strong molecular evidence (that we did not discuss in class) suggests that all members of the Subphylum Hexapoda are derived from a common ancestor within the Subphylum Crustacea, as in the cladogram shown below. Given this new information, answer the question below. Note: Don't panic. Some of the names of these groups are new to you (Copepoda, Malacostraca, and Remipedia are all classes or subclasses within the Subphylum Crustacea), but this will not affect your ability to answer this question. Myriapoda Copepoda (Crustacea) Malacostraca (Crustacea) Hexapoda Remipedia (Crustacea) If we insisted that all groups must be categorized and named so that taxonomic ranks/names always include a single common ancestor and all of its descendants, how would this new evidence change our definition of a hexapod? Hexapoda and Melacostraca would have to be classified…arrow_forwardPlease asaparrow_forwardHow old are the oldest fossils of Eukaryotic cells?arrow_forward
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