Number of Species in Different Animal Phyla Quiz
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Questions and Answers

Which animal phylum has the highest number of known species according to Table 1?

  • Mollusca
  • Nematoda
  • Chordata
  • Arthropoda (correct)
  • What is the characteristic that led to the evolution towards animal life, as mentioned in the text?

  • Acquisition of heterotrophy (correct)
  • Ability to photosynthesize
  • Acquisition of autotrophy
  • Capability to reproduce asexually
  • Which stage of phylogenesis involves the emergence of pluricellular forms like metazoans?

  • 4th stage
  • 1st stage
  • 2nd stage (correct)
  • 3rd stage
  • What is the term used for the fertilized egg that first forms an agglomerate of cells in the development process?

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

    Which animal phylum listed in Table 1 has the lowest number of known species?

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

    What is the crucial characteristic that led to the evolution towards animal life in unicellular organisms?

    <p>Acquisition of heterotrophy</p> Signup and view all the answers

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