Closed circulatory system occurs in

  • A
    Earthworm
  • B
    Cockroach
  • C
    Grasshopper
  • D
    Housefly

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Which one of the following does not have a larval stage in its life cycle?

Which one of the following is not a hermaphrodite animal?

The first circulatory system is observed in the members of this phylum.

$P$ (Assertion): The first circulatory system is observed in the phylum Annelida.
$Q$ (Reason): The first true coelom is observed in the phylum Annelida.

In evolution,which of the following evolved for the $1^{st}$ time in $Annelida$?

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