(A) In the earthworm ($Pheretima$ $posthuma$),there are four pairs of spermathecae located in the $6^{th}$ to $9^{th}$ segments.These structures are s

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(A) In the earthworm ($Pheretima$ $posthuma$),there are four pairs of spermathecae located in the $6^{th}$ to $9^{th}$ segments.These structures are situated in the ventrolateral walls of the segments $6, 7, 8,$ and $9$.They function to receive and store spermatozoa during the process of copulation.