Animal Classification Quiz
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Questions and Answers

What is the term used to describe the study of evolutionary relationships between organisms?

  • Phylogeny (correct)
  • Morphology
  • Taxonomy
  • Genetics

    • What is the significance of similarities in biochemical compounds found within cells?

  • They are only found in eukaryotic cells
  • They indicate a recent common ancestor
  • They are a result of convergent evolution
  • They provide evidence for evolutionary relationships between organisms (correct)

    • What is the purpose of a molecular clock?

  • To measure the rate of simple mutations over time (correct)
  • To compare the proteins of two different organisms
  • To determine the exact time of species divergence
  • To identify the common ancestor of two species

    • What is an example of genetic similarity between humans and yeasts?

    <p>The presence of the same gene that codes for myosin in both organisms</p> Signup and view all the answers

    What can be used to determine the evolutionary relationships between organisms that do not resemble each other anatomically?

    <p>Genetic similarities</p> Signup and view all the answers

    What is phylogeny?

    <p>The evolutionary history of an organism</p> Signup and view all the answers

    What do phylogenetic trees show?

    <p>The evolutionary relationships between organisms</p> Signup and view all the answers

    According to the chart, which two animals are the most closely related?

    <p>Animal #1 and Animal #4</p> Signup and view all the answers

    What do Animals #1, #2, #3, and #4 have in common?

    <p>They belong to the same phylum</p> Signup and view all the answers

    Which animal is the most distantly related to the others?

    <p>Animal #3</p> Signup and view all the answers

    What is the primary basis for Linnaeus' system of classification?

    <p>Morphology (Structural Similarities)</p> Signup and view all the answers

    According to modern taxonomy, which of the following is used in addition to morphology to classify organisms?

    <p>Genetic similarities and evolutionary relationships</p> Signup and view all the answers

    What does a branch point on a phylogenetic tree represent?

    <p>A common ancestor of two or more organisms</p> Signup and view all the answers

    Which of the following is an example of a homologous structure?

    <p>All of the above</p> Signup and view all the answers

    What is the closest relative to the Rotifers, according to the phylogenetic tree?

    <p>Roundworms</p> Signup and view all the answers

    What is the purpose of the out-group in a cladogram?

    <p>To serve as a basis of comparison with the in-group</p> Signup and view all the answers

    What is a characteristic of the in-group in a cladogram?

    <p>It possesses one or more derived characters</p> Signup and view all the answers

    What do flowering plants, ferns, and gymnosperms have in common?

    <p>They all have vascular tissue</p> Signup and view all the answers

    What is an example of a derived character in the given cladogram?

    <p>The presence of vascular tissue</p> Signup and view all the answers

    Why are mosses used as the out-group in this cladogram?

    <p>Because they are only distantly related to the other organisms</p> Signup and view all the answers

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