Post-anal tail is present in

  • A
    Cobra
  • B
    Earthworm
  • C
    Scorpion
  • D
    Lower invertebrate

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There has been an increase in the number of chambers in the heart during the evolution of vertebrates. Name the classes of vertebrates that have two,three,and four-chambered hearts.

In vertebrates,the notochord is replaced by which structure during the embryonic stage?

Which of the following is not included in the phylum $Chordata$?

Draw a labeled diagram showing the fundamental characteristics of Phylum Chordata.

In which of the following is the notochord present during the embryonic stage?

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