$A$: Piscean scales are similar to reptilian scales in origin.
$R$: Age of the animal can be deduced by lines of growth on both the scales.

  • A
    Assertion and Reason both are correct and Reason is the correct explanation of Assertion.
  • B
    Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.
  • C
    Assertion is correct,but Reason is incorrect.
  • D
    Both Assertion and Reason are incorrect.

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Match the following animals with their respective phyla and arrange them in the correct order as per the given list of animals: Animals: $Leucosolenia$,$Opalina$,$Planaria$,$Wuchereria$. Phyla: $Aschelminthes$,$Protozoa$,$Porifera$,$Platyhelminthes$.

Choose the correct option representing the organisms belonging to their respective classes.

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