Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
11th Edition
ISBN: 9781488687075
Author: Lisa, A. Urry
Publisher: PEARSON
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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
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Three major phylogenetic groups of Bilateria are currently
recognized: Ecdysozoa, Lophotrochozoa, and Deuterostomia.
Which of these three groups is least diverse? Where are humans?
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
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3) whether the organism has a
coelom
4) the number of tissue layers it has
5) the type of body symmetry it has
The phylogenetic tree in Exercise 1 above shows an outdated relationship between Brachiopoda, Bryozoa, and Mollusca.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 total
Chapter 33 Solutions
Campbell Biology: Australian And New Zealand Edition + Mastering Biology With Etext
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 - MAKE CONNECTIONS In Figure 33.8, assume that the...Ch. 33 - Evolution connection Interpret thf data Draw a...Ch. 33 - Prob. 8TYUCh. 33 - Prob. 9TYUCh. 33 - SYNTHESIZE YOUR KNOWLEDGE Colleclively, do these...
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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
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- Suppose 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_forwardWhat structure differentiates Ectoprocts and Brachiopods from other Lophotrochozoa? Select one: 1-Complete digestive tract with two openings. 2- Fluid-filled coelom. 3- Triploblastic. 4- Suspension feeding via lophophore. 5- Trochophore larval stage. Please provide explanations in detail for the correct option as well as the incorrect options.arrow_forward
- What features make placozoans interesting from a phylogenetic perspective?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_forwardcompare cnidarians to sponges and to the clade containing flatworms, mollusks, and annelids. What features are similar among these groups? What features are different?arrow_forward
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