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 (A)</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 (A)</p> Signup and view all the answers

What is phylogeny?

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

What do phylogenetic trees show?

<p>The evolutionary relationships between organisms (D)</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 (C)</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 (D)</p> Signup and view all the answers

Which animal is the most distantly related to the others?

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

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

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

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

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

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

<p>Roundworms (A)</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 (B)</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 (D)</p> Signup and view all the answers

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

<p>They all have vascular tissue (D)</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 (B)</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 (B)</p> Signup and view all the answers

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