Modified Mastering Biology with Pearson eText -- Standalone Access Card -- for Campbell Biology
11th Edition
ISBN: 9780134447285
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 28.2, Problem 2CC
WHAT IF? Ø DNA sequence data for a diplomonad, a euglenid, a plant, and an unidentified protist suggest that the unidentified species is most dosely related to the diplomonad. Further studies reveal that the unknown species has fully functional mitochondria. Based on these data, at what point on the phylogenetic tree in Figure 28.2 did the mystery protist's lineage probably diverge from other eukaryote lineages? Explain.
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5)Which of the following observations constitutes evidence that mitochondria evolved before chloroplasts?
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Chapter 28 Solutions
Modified Mastering Biology with Pearson eText -- Standalone Access Card -- for Campbell Biology
Ch. 28.1 - Cite at least four examples of structural and...Ch. 28.1 - Summarize the role of endosymbiosis in eukaryotic...Ch. 28.1 - Prob. 3CCCh. 28.2 - Why do some biologists describe the mitochondria...Ch. 28.2 - WHAT IF? DNA sequence data for a diplomonad, a...Ch. 28.3 - Explain why forams have such a well-preserved...Ch. 28.3 - WHAT IF? Would you expect the plastid DNA of...Ch. 28.3 - Prob. 3CCCh. 28.3 - Prob. 4CCCh. 28.4 - Contrast red algae and brown algae.
Ch. 28.4 - Why is it accurate to say that Ulva is truly...Ch. 28.4 - Prob. 3CCCh. 28.5 - Contrast the pseudopodia of amoebozoans and...Ch. 28.5 - Prob. 2CCCh. 28.5 - Prob. 3CCCh. 28.6 - Justify the claim that photosynthetic protists are...Ch. 28.6 - Prob. 2CCCh. 28.6 - WHAT IF? High water temperatures and pollution...Ch. 28.6 - MAKE CONNECTIONS The bacterium Wolbachia is a...Ch. 28 - Describe similarities and differences between...Ch. 28 - What evidence indicates that the excavates form a...Ch. 28 - Prob. 28.3CRCh. 28 - On what basis do systematists place plants in the...Ch. 28 - Describe a key feature for each of the main...Ch. 28 - Prob. 28.6CRCh. 28 - Plastids that are Surrounded by more than two...Ch. 28 - Biologists think that endosymbiosis gave rise to...Ch. 28 - Prob. 3TYUCh. 28 - According to the phylogeny presented in this...Ch. 28 - In a life cycle with alternation of generations,...Ch. 28 - Based on the phylogenetic tree in Figure 28.2,...Ch. 28 - Prob. 7TYUCh. 28 - SCIENTIFIC INQUIRY Applying the If then logic of...Ch. 28 - WRITE ABOUT A THEME: INTERACTIONS Organisms...Ch. 28 - SYNTHESIZE YOUR KNOWLEDGE This micrograph show's a...
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- Redraw the phylogeny of eukaryotes, expanded to show different members (e.g. dinoflagellates, diatoms) of the supergroups as necessary and indicate the location of the primary endosymbioses for mitochondria and chlorophyll on the phylogeny. Indicate the location of three secondary endosymbioses leading to chloroplasts and one location showing the loss of mitochondria on the same phylogeny.arrow_forward1. How is designated the ancestral protist lineage that gives origin to the metazoans? 2. Layout that protist lineage (inform the names of the structures) 3. Wich big philo of metazoa is most related to this protist lineage? 4. What is the main sinapomorphy of this meathozary group? 5. How can the relationship be morphologically proven to the ancestral protist lineage? 6. The feeding of the basal metazoan has characteristics considered plesiomorphic. Indicate the food habit and digestion process of the basal metazoan (I'm sorry, i don't speak english very well)arrow_forwardEvaluate and Synthesize 16. EVOLUTION LINK Where would you position the rhyniophytes on Figure 27-13? Would the line for rhyniophytes extend to the tips of the rest of the cladogram? Why or why not?arrow_forward
- EVOLUTION LINK Why are the protists considered paraphyletic? Use Figure 26-3 to help explain your answer.arrow_forwardEndosymbioses that lead to the evolution of euglenoids and, separately, the evolution of chlorarachniophytes were the result of the combining of: a. two ancestral nonphotosynthetic prokaryotes. b. two ancestral photosynthetic prokaryotes. c. a nonphotosynthetic eukaryote with a photosyntheticeukaryote. d. a photosynthetic prokaryote with a nonphotosyntheticeukaryote. e. mitochondria with an already established plastid.arrow_forwardHello! Discuss the adaptations that plants and protists have evolved to invade and manipulate their hosts. ( one example of a plant and one of a protist). Thank youuuarrow_forward
- 1. Why does the endosymbiotic hypothesis need to maintain that chloroplasts may have had at least three different origins? It is because a. the phyla of algal protists can be divided into three groups based on photosynthetic pigments and chloroplast structure b. molecular systematics link the red line, green line, and brown line to three different eubacteria c. the pigment compositions and thylakoid arrangement of cyanobacteria occur in three different arrangements d. the chloroplasts of green plants show three distinct morphologies 2. What do the banded formations in marine sediments indicate? a. Early cyanobacteria probably were producing oxygen when the sediment was deposited. b. The pH value of the early seas was quite low due to the excretion of organic acids from the fermentation by prokaryotes. c. Purple sulfur bacteria were the dominant life form in the seas during that time. d. The early atmosphere was very reducing. 3. How did the first gene develop?…arrow_forwardDRAW IT Recent evidence indicates that the root ofthe eukaryotic tree may lie between a clade that includesunikonts and excavates, and all other eukaryotes. Drawthe tree suggested by this result.arrow_forwardBulleted items are choices for questions Protists, as a group, represent one of the kingdoms of organisms in the eukaryotic domain. In the other kingdoms, the organisms grouped within a kingdom are very closely related and share many unifying features. The many different organisms grouped as protists are not necessarily closely related, and many different types of traits are represented among them. Review the following list of statements, and select which statements are correct descriptions of protists. Check all that apply. Protists represent both heterotrophic and autotrophic nutritional modes. Some protists are colonial. No protists are multicellular. The phylogenetic tree displayed here shows the evolution and relationships between different major protist groups, as scientists currently understand them. It also shows how these different groups of protists are related to animals, fungi, and land plants. The protist groups are highlighted in tan boxes.…arrow_forward
- Protists are the most varied group of organisms that we studied this term. They display unique adaptations in feeding, reproduction, and lifestyle (parasitism, free living, etc) among many others! Discuss protist evolution, including an overview of the major groups, and the breadth of variations that occur within this paraphyletic clade. How did protists lead to the evolution of the rest of life on Earth?arrow_forwardThis chapter shows a phylogenetic tree for the three domains of life, which is based on DNA sequence data for rRNA and other genes. Which of the following answers concerning the phylogenetic relationships found within this tree is incorrect? View Available Hint(s)for Part A Euryarcheotes are found in the Archaea Diatoms, Tubulinids, and Euglenozoans belong to the domain Eukarya Forams, Fungi, and Chlamydias belong to the domain Eukarya. Spirochetes belong to the domain Bacteria Ciliates, Red Algae, and Plants belong to the domain Eukarya.arrow_forwardIf an ancestral protist was classified as an opisthokont, then what should be true of this protist? -They should also have given rise to the plants. -They should perform heterotrophy by secretion of exoenzymes. -Like diplomonads and parabasalids, they should bear multiple flagella. -They should be parasitic -They should be the common ancestor of the basidiomycetes and animals.arrow_forward
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