Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 33, Problem 5TYU
In Figure 33.2, which two main clades branch from the most recent common ancestor of the eumetazoans?
(A) Porifera and Cnidaria
(B) Lophotrochozoa and Ecdysozoa
(C) Cnidaria and Bilateria
(D) Deuterostomia and Bilateria
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Three major phylogenetic groups of Bilateria are currently
recognized: Ecdysozoa, Lophotrochozoa, and Deuterostomia.
Which of these three groups is least diverse? Where are humans?
Collar cells (choanocytes) are characteristic of (a) poriferans (b) cnidarians (c) most coelomates (d) lophotrochozoans (e) ecdysozoans
Sponges (Phylum Porifera) are the basal taxon to animals and were once thought to belong to plants.
1) Identify three characteristics that distinguish sponges from plants.
2) Identify three characteristics (present or absent) that distinguish sponges from other animal taxa.
Chapter 33 Solutions
Campbell Biology
Ch. 33.1 - Prob. 1CCCh. 33.1 - Prob. 2CCCh. 33.2 - Compare and contrast the polyp and medusa forms of...Ch. 33.2 - VISUAL SKILLS Use the cnidarian life cycle...Ch. 33.2 - MAKE CONNECTIONS Many new animal body plans...Ch. 33.3 - Prob. 1CCCh. 33.3 - Prob. 2CCCh. 33.3 - MAKE CONNECTIONS Explain how the molluscan foot...Ch. 33.4 - Prob. 1CCCh. 33.4 - Describe two adaptations that have enabled insects...
Ch. 33.4 - MAKE CONNECTIONS Historically, annelids and...Ch. 33.5 - Prob. 1CCCh. 33.5 - WHAT IF? The insect Drosophila melanogaster and...Ch. 33.5 - MAKE CONNECTIONS Describe how the features and...Ch. 33 - Lacking tissues and organs, how do soonges...Ch. 33 - Describe the cnidarian body plan and its two major...Ch. 33 - is the lophotrochozoan clade united by unique...Ch. 33 - Describe some ecological roles of nematodes and...Ch. 33 - You've read that echinoderms and chordates are...Ch. 33 - A land snail, a clam and an octopus all share...Ch. 33 - Prob. 2TYUCh. 33 - The water vascular system of echinoderms (A)...Ch. 33 - Prob. 4TYUCh. 33 - In Figure 33.2, which two main clades branch from...Ch. 33 - Prob. 6TYUCh. 33 - Evolution connection Interpret thf data Draw a...Ch. 33 - Prob. 8TYUCh. 33 - Prob. 9TYUCh. 33 - SYNTHESIZE YOUR KNOWLEDGE Colleclively, do these...
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
- Suppose you came across a novel organism you suspected belonged to one of the following animal phyla: Porifera, Cnidaria, or Ctenophora. Which of the following characteristics would NOT be helpful in placing the organism into the correct phylum? 1) how it acquires food 2) whether adults are sessile or mobile 3) whether the organism has a coelom 4) the number of tissue layers it has 5) the type of body symmetry it hasarrow_forwardThe phylogenetic tree in Exercise 1 above shows an outdated relationship between Brachiopoda, Bryozoa, and Mollusca. We now know that: (1) Brachiopoda is more closely related to Mollusca; and (2) Bryozoa forms the sister-group to the clade formed by Brachiopoda+Mollusca. In the space below draw a phylogenetic tree showing the correct interrelationships among the 5 clades listed: Bryozoa: Brachiopoda: Linguliformea: Craniiformea: Rhynchonelliformea: Please include mollusca. Should be 6 classes totalarrow_forwardAside from ecdysis, describe two (2) common characteristics shared by the different smaller phylum under Ecdysozoa: Kinorhyncha, Priapulida, Nematomorpha.arrow_forward
- Class Gastropoda and Class Bivalvia independently evolved modifications to their body plan that allowed them to invade sandy and muddy habitats, burying their bodies under the surface and accessing the surface via siphons. For an example organism in each Class, (1) draw a diagram showing the morphological modifications and (2) write a description of how this organism had evolved from the hypothetical ancestral mollusk (HAM) body plan.arrow_forwardWhich of these models correctly identifies the most recent common ancestor diploblasts? Cnidaria Lophotrochozoa Ecdysozoa Deuterostomes Cnidaria Lophotrochozoa Ecdysozoa Deuterostomes Cnidaria -Lophotrochozoa Ecdysozoa Deuterostomes Cnidaria Lophotrochozoa Ecdysozoa Deuterostomesarrow_forwardDownload a phylogenetic tree of Bilateria that includes the ten phyla of bilaterian discussed in this module. From the tree, be able to identify whether members of the phylum are coelomates (C), pseudocoelomates (P), or acoelomates (A). Use your labeled tree to answer the following questions: a) For each of the three major clades of bilaterian, what can be inferred about whether the common ancestor of the clade had a true coelom? b) To what extent has the presence of a true coelom in animals changed over the course of evolution?arrow_forward
- The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of (A) a body cavity. (B) a complete digestive tract. (C) mesoderm. (D) tissues.arrow_forwardSuppose you discover a new species of animal that does not have body segments, but is triploblastic, coelomate, and cephalized. Under the molecular phylogenetic scheme, you would allocate it to which phylum? A)Platyhelminthes. B)Arthropoda. C)Nematoda. D)Mollusca. E)Echinodermata.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
- Aside from ecdysis, describe two (2) common characteristics shared by the different smaller phylum under Ecdysozoa: Kinorhyncha, Priapulida, Nematomorpha. Elaborate each characteristic.arrow_forwardIf chaetognaths belong to Lophotrochozoa, they would be more closely related to animals like earthworms which have a trochophore larva. If they belong to Ecdysozoa, they would... A. Be more closely related to animals that have a lophophore feeding structure B. Be more closely related to animals that are diploblastic C. Be more closely related to animals without symmetry D. Be more closely related to animals that shed their outer cuticle E. Both B and D are true O A O B O C O D O Earrow_forwardWhat features make placozoans interesting from a phylogenetic perspective?arrow_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
Phylogeny and the Tree of Life; Author: Professor Dave Explains;https://www.youtube.com/watch?v=KLMn4XwS8Tw;License: Standard YouTube License, CC-BY