The nephridiopore is the opening of $............$.

  • A
    Malpighian tubule
  • B
    Nephridium
  • C
    Nephron
  • D
    Trachea

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In earthworms,fertilization occurs in the ......?

Which of the following statements is true regarding the earthworm?

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How many pairs of lateral hearts are present in $Pheretima$ (in pairs)?

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