General Biology 2 – Earth's Geologic Time Scale Review
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Questions and Answers

Which geologic time period is known as the 'Age of Early Life'?

  • Hadean
  • Phanerozoic
  • Archaean
  • Proterozoic (correct)
  • During which era did the 'Cambrian Explosion' occur, leading to the emergence of diverse life forms in the sea?

  • Paleozoic Era (correct)
  • Mesozoic Era
  • Proterozoic Eon
  • Cenozoic Era
  • Which theory suggests that life on Earth originated from nonliving matter through the addition of energy to Earth's early atmosphere gases?

  • Theory of Panspermia
  • Catastrophism Theory
  • Primordial Soup Theory (correct)
  • Spontaneous Generation Theory
  • During which geologic era did the first seed plants and reptiles appear on Earth?

    <p>Paleozoic Era</p> Signup and view all the answers

    Which period under the Paleozoic Era is known as the 'age of fishes'?

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

    Which life form dominated from the Silurian to Permian periods during the Paleozoic Era?

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

    Which era is known as the 'Age of Mammals'?

    <p>Cenozoic Era</p> Signup and view all the answers

    During which period did flowering plants first appear?

    <p>Cretaceous Period</p> Signup and view all the answers

    What characterized the Neogene period in terms of climate and habitats?

    <p>Cooler and drier climate with shrinking forests</p> Signup and view all the answers

    Which group of organisms dominated the land during the early Mesozoic Era?

    <p>Gymnosperms like ginkgophytes and cycads</p> Signup and view all the answers

    What is considered the largest land mammal that ever lived?

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

    In which period did dinosaurs evolve and diversify to become gigantic?

    <p>Jurassic Period</p> Signup and view all the answers

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