Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 33, Problem 33.5CR
You've read that echinoderms and chordates are closely related and have evolved independently for over 500 million years. Explain how both of these statements can be correct.
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Chapter 33 Solutions
Campbell Biology (10th Edition)
Ch. 33.1 - Prob. 1CCCh. 33.1 - Prob. 2CCCh. 33.2 - Compare and contrast the polyp and medusa forms of...Ch. 33.2 - Prob. 2CCCh. 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...
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- Fingers and toes would be an ancestral feature in land vertebrates. A) True B Falsearrow_forwardBased on the diagram, which statement is true about the evolution of animals? A. Echinoderms evolved after chordates. B. Mineralized skeletons deveoloped before notocords. C. Chrondricthyes share chordate ancestors with myxini. D. The ancestral deutrosome had a notocord and vertebraearrow_forwardAlthough most salamanders have four legs, a few species that live in shallow water lack hind limbs and have extremely tiny forelimbs (see photograph).Develop a hypothesis to explain how limbless salamanders came about according to Darwin’s mechanism of evolution by natural selection. How could you test your hypothesis?arrow_forward
- Explain the significance of the discovery of Archaeopteryx. Why did this fossil demonstrate beyond reasonable doubt that birds are grouped phylogenetically with dinosaurs?arrow_forwardIf members of a group, such as chordates , evolved from a common ancestor then they should show similarities in structure, which supports this hypothesis?arrow_forwardMammals are farther removed from echinoderms in phylogenetic alliance as they do with birds. Yet birds have a meroblastic cleavage, whereas mammalian cleavage is holoblastic, like echinoderms. How will the mammal convince the bird that it did not deviate from family traditions?arrow_forward
- List three groups of adaptations that guided vertebrate evolution, and explain how each has contributed to the success of vertebrates.arrow_forwardwrites a paragraph that describe the different types of evidence for the fact that tetropods evolved from fish.arrow_forwardDescribe how paedomorphosis as a mechanism could explain the evolution of the chordate body plan (from echinoderm larval form to a craniate form).arrow_forward
- Figure 15.33 Which of the following statements about common features of chordates is true?a. The dorsal hollow nerve cord is part of the chordate central nervous system.b. In vertebrate fishes, the pharyngeal slits become the gills.c. Humans are not chordates because humans do not have a tail.d. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column.arrow_forwardThe earliest-diverging gnathostomes (jawed vertebrates) were fish. Which one of the following statements about the characteristics of different groups of modern jawed fish is INCORRECT? a. Ray-finned fish possess a bony skeleton and an operculum covers the gills. b. Cartilaginous fish are denser than water and maintain buoyancy using fins and a large oil-filled liver. c. Lobe-finned fish such as dipnoi possess both gills and lungs. d. Ray-finned fish possess fins supported by skeletal extensions of the pectoral and pelvic areas and moved by muscles. e. Cartilaginous fish possess flexible cartilage skeletons, which is a derived character.arrow_forwardRecall that amphibians gave rise to the earliest reptiles who then branched off to all the different kinds of reptiles and mammals. List two major adaptations present in REPTILES* that allowed them to live completely on dry land, as compared to amphibians.arrow_forward
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