Which class is the first class of vertebrates?

  • A
    Aves
  • B
    Reptilia
  • C
    Mammalia
  • D
    Amphibia

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Similar Questions

$S$ - Statement: $Capelle$ classified frogs and $Ichthyophis$ into $Amphibia$.
$R$ - Reason: Frogs and $Ichthyophis$ possess a three-chambered heart.

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Heart in amphibians is

In which of the following organisms is a three-chambered heart found?

Which tract opens into the cloaca of an amphibian?

Which one of the following is an amphibian?

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