In earthworm,paired spermathecae are found in

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(C) In earthworms ($Pheretima$ $posthuma$),four pairs of spermathecae are located in the $6^{th}$ to $9^{th}$ segments.These are situated on the ventr

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$6^{th}$ to $9^{th}$ segments

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(C) In earthworms ($Pheretima$ $posthuma$),four pairs of spermathecae are located in the $6^{th}$ to $9^{th}$ segments.These are situated on the ventrolateral sides of the intersegmental grooves,specifically one pair in each of the $6^{th}, 7^{th}, 8^{th},$ and $9^{th}$ segments.They are responsible for storing spermatozoa received during copulation.

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Definitions / Explanation:
$(i)$ Exonephric
$(ii)$ Enteronephric

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