Animal Body Plans and Symmetry

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Questions and Answers

Which of the following is NOT one of the eleven organ systems found in metazoans?

  • Endocrine
  • Respiratory
  • Excretory
  • Spherical (correct)

Which type of symmetry can be divided into similar halves by more than two planes passing through the longitudinal axis?

  • Spherical symmetry
  • Comb jellies
  • Radial symmetry (correct)
  • Biradial symmetry

Which type of symmetry is rare in animals and occurs in unicellular forms?

  • Biradial symmetry
  • Comb jellies
  • Spherical symmetry (correct)
  • Radial symmetry

Which type of symmetry can be produced by only two planes passing through the longitudinal axis?

<p>Biradial symmetry (C)</p> Signup and view all the answers

What is the basal attachment disc called in sessile forms with radial symmetry?

<p>Aboral surface (C)</p> Signup and view all the answers

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