Animal Kingdom Quiz

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Questions and Answers

What is the estimated number of living animal species as of 2022?

  • 3.5 million
  • 1.5 million
  • 2.16 million (correct)
  • 4.2 million

Which clade includes animals with a bilaterally symmetric body plan?

  • Cnidaria
  • Acoelomorpha
  • Radiata
  • Bilateria (correct)

During which geological period did the Cambrian explosion begin?

  • 300 million years ago
  • 200 million years ago
  • 539 million years ago (correct)
  • 700 million years ago

Which group contains animals such as nematodes, arthropods, flatworms, annelids, and molluscs?

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

What is the size range of animals mentioned in the text?

<p>From 8.5 micrometres to 33.6 metres (B)</p> Signup and view all the answers

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