For earthworms,identify the $(i)$ Class,$(ii)$ Genus,$(iii)$ Order,and $(iv)$ Family.

  • A
    $(i)$ Polychaeta,$(ii)$ Pheretima,$(iii)$ Orthoptera,$(iv)$ Megascolecidae
  • B
    $(i)$ Oligochaeta,$(ii)$ Pheretima,$(iii)$ Opisthopora,$(iv)$ Megascolecidae
  • C
    $(i)$ Oligochaeta,$(ii)$ Periplaneta,$(iii)$ Opisthopora,$(iv)$ Blattidae
  • D
    $(i)$ Oligochaeta,$(ii)$ Pheretima,$(iii)$ Orthoptera,$(iv)$ Megascolecidae

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In earthworms,exonephric excretion occurs through:

Define the following terms:
$(i)$ Endomysium
$(ii)$ Prostomium

The clitellum of $Pheretima$ is a thick girdle that is:

In $Pheretima$,lymph glands produce:

Answer in one word or one line.
How many spermathecae are found in earthworm?

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