Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 24, Problem 3RQ
Briefly describe each of the following adaptations, and explain its adaptive significance: bilateral symmetry, radial symmetry, cephalization, closed circulatory system, coelom, segmentation.
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Review the extent of segmentation in Polychaetes, Leeches, Siboglinids, Echicrans, and Sipunculans. Which morphological features must change to produce an unsegmented body cavity? Is there evidence of transitional stages for these features?
Match the animal taxa (group) to the correct adaptation.
radial cleavage of embryo, do not develop a yolked egg, must have a
larval stage before the adult stage
three tissue layers, bilateral symmetry, but no body cavities.
two tissue layers and radial symmetry.
radial cleavage of embryo, develop a yolked egg and can mature the
developing fetus long, no larval stage
No true tissues and no symmetry
Protostome
sponges
Flatworms
Cnidarians (jellyfish and sea anemones)
Deuterostome
Explain the importance of the presence of symmetry (radial and biradial) and presence of true tissues in the biological proccesses of cnidarians and ctenophores.
Radial/biradial symmetry
True tissues
Reproduction
Development
Body support
Locomotion
Chapter 24 Solutions
Biology
Ch. 24.1 - Can you... list the characteristics that...Ch. 24.2 - Prob. 1CYLCh. 24.2 - describe the different types of body symmetry,...Ch. 24.2 - give examples of animal groups with each type of...Ch. 24.2 - Prob. 4CYLCh. 24.3 - Prob. 1TCCh. 24.3 - Prob. 2TCCh. 24.3 - Prob. 3TCCh. 24.3 - What advantage does a digestive system with two...Ch. 24.3 - Why does pouring sail on a leech harm it?
Ch. 24.3 - Prob. 6TCCh. 24.3 - Prob. 7TCCh. 24.3 - If you have ever accidentally walked into a spider...Ch. 24.3 - Prob. 1CYLCh. 24.3 - list some member organisms in each of these...Ch. 24.3 - Prob. 3CYLCh. 24.3 - Physicians Assistants Another invertebrate animal...Ch. 24 - Prob. 1MCCh. 24 - Prob. 2MCCh. 24 - Prob. 3MCCh. 24 - Prob. 4MCCh. 24 - Prob. 5MCCh. 24 - __________ Animals obtain energy by __________;...Ch. 24 - Bilaterally symmetrical animals have __________...Ch. 24 - Animals that have an anterior and posterior end...Ch. 24 - Lophotrochozoans and ecdysozoans (molting animals)...Ch. 24 - Prob. 5FIBCh. 24 - Three major groups within the mollusks are the...Ch. 24 - Prob. 7FIBCh. 24 - For each of the following distinctive structures,...Ch. 24 - Prob. 1RQCh. 24 - Prob. 2RQCh. 24 - Briefly describe each of the following...Ch. 24 - Prob. 4RQCh. 24 - Prob. 5RQCh. 24 - Prob. 6RQCh. 24 - Prob. 7RQCh. 24 - Prob. 8RQCh. 24 - Insects are the largest group of animals on Earth....Ch. 24 - Prob. 2AC
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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
- Define adaptation. How could you use a comparative approach to test whether mesoglea within a scyphozoan medusa was an adaptation for buoyancy? How could you use a different criterion to test whether the eyes of cubozoans were adaptive? Where would a comparative approach prove a better way to assess the adaptive values of a tegument in internal parasites: in tapeworms or nematodes? Why?arrow_forwardCompare and contrast the Phyla Porifera and Cnidaria. Think: Symmetry, Form and function, Tissue layers (present or absent, if present which are represented), Musculature/how they move, Reproduction, Nervous system and sensory structures, Respiration, Digestion (and how they feed), and comment on unique cell types found in each.arrow_forwardCreate a body plan table (Insert → Add Table) for the following animal phyla: Porifera, Cnidaria, Platyhelminthes, Mollusca, Annelida, Nematoda, Arthropoda, Echinodermata, and Chordata. Describe each phylum by identifying the following body plan features. Use Lesson 12 (Chapter 32) and Lesson 13 (Chapter 33) as a guide. 1) Symmetry: Asymmetrical, Radial, or Bilateral 2) Tissue type: Parazoa, Eumetazoa (diploblastic), or Eumetazoa (triploblastic) 3) Body cavity (if triploblastic): Acoelomate, Psuedocoelomate, or Coelomate 4) Developmental mode (if Coelomate): Protostome or Dueuterostome Note: Depending on the body plan, features 3 & 4 may not apply to specific phyla. * Please answer 3) and 4) ONLY. Thank you.arrow_forward
- Discuss the idea that every evolutionary adaptation has both advantages and disadvantages, using each of the following as an example: (a) cephalization,(b) the arthropod exoskeleton, and (c) segmentation with specialization.arrow_forwardNematode worms and annelid worms share which of the following features? presence of a circulatory system molting absence of species with parasitic lifestyles presence of segmentation a digestive tract with two openings (a mouth and an anus)arrow_forwardCharacterize both aves and teleosts as highly derived from other vertebrates by giving examples of several unique evolutionary structures from each group.arrow_forward
- Describe the following characteristics of cnidarians: common developmental stage digestive system sexuality musculature ciliationarrow_forwardCompare and contrast the body coverings of a free-living turbellarian, a monogenaen fluke, a cestode, and a nematode. Which problems does each solve or create? Be sure to consider locomotion, permeability, ciliation, and habitat, and to think of the entire life cycle.arrow_forwardDescribe the annelid body plan, including body wall, segments, coelom and its compartments, and coelomic lining.arrow_forward
- The Cnidarian life-cycle varies from species to species. The species obelia is characterized by exclusively dominant medusa stage exclusively dominant polyp stage alternation between an asexual polyp form and sexual medusa form alternation between an asexual medusa form and sexual polyp formarrow_forwardName three disadvantages of sexual reproduction (relative to the asexual alternative). Name one advantage. Diagram the life cycles of a typical scyphozoan (e.g. Aurelia), a trematode, and a monogonontan rotifer, then compare and contrast the features of these life cycles. Be sure to emphasize where and how sexual reproduction, asexual reproduction and dispersal take place. Relate where sex and asex occur in the life cycle to the first part of the question.arrow_forwardDistinguish between (a) radial and bilateral symmetry; (b) blastula andgastrula; (c) direct and indirect development; (d) complete andincomplete digestive tracts; (e) coelom and pseudocoelom.arrow_forward
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