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 25.2, Problem 1CC
Summarize the evidence that choanoflagellates are the sister group of animals.
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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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- Compare and Contrast Merozoites vs. Sperozoitesarrow_forwardSome literature lists the 4 groups of protozoans as: 1) Flagellates 2) Amoebas 3) Ciliates 4) Sporozoans But other sources list the 4 groups as: 1) Flagellates 2) Amoebas 3) Heliozoans 4) Ciliates Compare and contrast heliozoans vs. sporozoans. Explain why one would replace the other in literature sources.arrow_forwardList the characteristic feature of zooflagellates.arrow_forward
- The termite gut environment is lacking a fresh supply of oxygen O2. However, it is rich with food due to the presence of bacteria that contain enzymes capable of breaking down cellulose and lignin, the macromolecules that make wood. Use this information to determine which of following protista groups is more likely to be found in a termite gut. Diatoms Radiolaria Parabasilids O Rhodophyta O Foraminifera (Forams)arrow_forwardDescribe the morphology of oomycetes. Which protists are known for their cytoplasmic streaming movement? Which protists occasionally resemble tiny snails? What are the shells made of? Which group of protists have elaborate exteriors of glassy silica and are very common in the fossil record? What supergroup do land plants share a common ancestor with? What protists are common in tropical waters and are generally called “seaweeds?” Which of the algaes are the furthest living relatives to land plants? Which algaes are the closest living relatives to land plants? Which protists move using tube-like pseudopodia? Which protist group exhibits similarities to fungi as a result of convergent evolution? Which protist group takes on a slug form when nutrients are hard to come by? What protist group do animals share a common ancestor with? What are the choanoflagellates are believed to resemble? Which group contains at least one type of human parasite? Ecology of…arrow_forwardPlease match the following Pseudopod 123456789 Chlamydomonas 123456789 Lichen 123456789 Green Algae 123456789 Eye Spot 123456789 Contractile Vacuole 123456789 Flagella 123456789 Anal Pore 123456789 Cilia 1. Structure used to eat food and move by Amoebas. 2. Structure which pumps fresh water out of protists. 3. Structure used by paramecium to move and to trap food. 4. Long tail-like structure used for mobility in Euglena. 5. Light-Sensitive area on a Euglena. 6. Controversial group of multi-cellular protists. 7. Biflagellated unicellular protist. 8. Used to release wastes via exocytosis in a paramecium. 9. None of the above (Should be selected more than once)arrow_forward
- Provide a substantial theory regarding how eukaryoticcells originated and how multicellularity came to be.arrow_forwardWhich of these six organisms are autotrophic and which ones are heterothropic ?arrow_forwardThe paraphyletic phylum Choanozoa contains chytrid zoospores and human sperm, among many other creatures. What are some important aspects of the group, in terms of its evolutionary significance?arrow_forward
- Describe at least four morphological features similar to both choanoflagellates and choanocytes of sponges and the functions of these structures in each. please do not directly copy from googlearrow_forwardwhat kind of molecules make the choanoflagellates the likely common ancestor of all animals.arrow_forwardDescribe the protozoan characteristics that illustrate why protozoa are informally placed into a single group.arrow_forward
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