Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 28.2, Problem 5CC
Summary Introduction
To explain: The features of the ancient choanoflagellate ancestors of animals that were important in the evolution of multicellularity, and the function served by these features in modern choanoflagellates.
Introduction: Choanoflagellates are eukaryotic organisms. These are believed to be the species that have the closest association with multicellular organisms (especially animals). They are unicellular and they contain flagella for locomotion.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
what kind of molecules make the choanoflagellates the likely common ancestor of all animals.
Differentiate the functions of the macro-and micronuclei of ciliates. What is the advantage of having dimorphic nuclei as compared to the monomorphic nucleus of other protozoans?
Apicomplexans are widespread and common parasites of worms, echinoderms, insects, and vertebrates (including humans). What characteristics do these protozoans have that make them highly infective (efficient as parasites)?
How can foram fossils provide clues about past cold and warm periods, and global temperature change?
What characteristics separate Euglenozoans from Chlorophytes (i.e., Volvox, green algae)?
Rotifers and acanthocephalans previously belonged to separate phylum. But recent molecular studies and genome analysis show that acanthocephalans are sister groups of a class under Phylum Rotifera. And thus, the two should belong to a single taxon. Aside from the molecular evidences, what morphological and physiological features of both the rotifers and acanthocephalans support this claim? Explain your answer.
Chapter 28 Solutions
Biology
Ch. 28.1 - An Introduction to Protists Core Skill:...Ch. 28.2 - Prob. 1CCCh. 28.2 - Evolution and Relationships Concept Check: How do...Ch. 28.2 - Evolution and Relationships Concept Check: How do...Ch. 28.2 - Prob. 4CCCh. 28.2 - Prob. 5CCCh. 28.3 - Prob. 1EQCh. 28.3 - Prob. 2EQCh. 28.4 - Prob. 1CCCh. 28.4 - Prob. 2CC
Ch. 28.4 - Core Skill: Modeling The goal of this modeling...Ch. 28 - Prob. 1TYCh. 28 - Prob. 2TYCh. 28 - Prob. 3TYCh. 28 - Prob. 4TYCh. 28 - What organisms have tertiary plastids? a. certain...Ch. 28 - What is surprising about mixotrophs? a. They have...Ch. 28 - What advantages do diatoms obtain from sexual...Ch. 28 - What are extrusomes? a. hairs on flagella b....Ch. 28 - Prob. 9TYCh. 28 - Prob. 10TYCh. 28 - Prob. 1CQCh. 28 - Why have molecular biologists sequenced the...Ch. 28 - Core Concept: Science and Society Why are the...Ch. 28 - Prob. 1COQCh. 28 - Prob. 2COQ
Knowledge Booster
Learn more about
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
- Which of the following is considered a synapomophy of the Kingdom Disciristatae? * It exhibits the tubular cristae Presence of a spiral or crystalline rod structure inside each of their flagella some taxa possess the excavate feeding groove the presence of a kinetosome at the base of a flagellum Which evolutionary novelty in the origin of eukaryotes paved the way for endosymbiosis to occur. * The evolution of digestive vesicles The formation of endomembrane system The appearance of a cytoskeleton. the formation of a nuclear membranearrow_forwardHow 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_forwardA previously unknown animal is being studied so that it can be classified. It is an invertebrate, triploblastic, dorsoventrally flattened, acoelomate, and has flame cells. Which phylum would you place it in? A)Arthropoda. B)Porifera C)Mollusca. D)Platyhelminthes. E)Cnidaria.arrow_forward
- According to the phylogeny presented in this chapter, whichprotists are in the same eukaryotic supergroup as plants?(A) green algae(B) dinoflagellates(C) red algae(D) both A and Carrow_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_forwardYou are being asked to describe the basic characteristics of an Oligochaete. Which of the following would not NOT include? A)a closed circulatory system B)a hydrostatic skeleton C)a non-living cuticle D)a complete digestive system E)segmentationarrow_forward
- Contrast the field of systematics with that of taxonomy and phylogenetics. How is systematics defined? How is taxonomy and phylogenetics similar or different from systematics? How did the systematic placement of Calostoma change our understanding of this taxon, in regards to the study Phylogeny of Calostoma, the gelatinous-stalked puffball, based on nuclear and mitochondrial ribosomal DNA sequences by Hughey and colleagues?arrow_forwardIs the presence of myomeres a symplesiomorphic or synapomorphic feature of vertebrates compared to conditions in other deuterostome metazoans? And are these structures symplesiomorphic, synapomorphic, or neither for vertebrates considered alone?arrow_forwardMacrocystis is a genus of kelp (large brown algae) that includes species having extremely longstipes (up to 60 meters) and floating structures containing gas (pneumatocysts) at the base of theblades. What might the purpose of the long stipes and pneumatocysts be?arrow_forward
- Describe and contrast the tegument of most turbellarians and the other classes ofPlatyhelminthes. Does the tegument provide evidence that trematodes,monogeneans, and cestodes form a clade within Platyhelminthes? Why?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_forwardWhich of the following is the correct classification for the following invertebrate animal: These animals have radial symmetry with 5 arms. They have an internal endoskeleton and a water vascular system connected to their tube feet for locomotion. Question 19 options: a) Phylum Platyhelminthes b) Phylum Annelida c) Phylum Mollusca, Class Bivalvia d) Phylum Echinodermata e) Phylum Arthropoda, subphylum Hexapoda f) Phylum Chordataarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
The Evolution of Populations: Natural Selection, Genetic Drift, and Gene Flow; Author: Professor Dave Explains;https://www.youtube.com/watch?v=SRWXEMlI0_U;License: Standard YouTube License, CC-BY
The Evolution of Humans | Evolution | Biology | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=Vf_dDp7drFg;License: Standard YouTube License, CC-BY