(N/A) Earthworms are hermaphrodites,meaning they possess both male and female reproductive organs in the same individual.
Key components of the reproductive system include:
$1$. Spermathecae: Four pairs located in segments $6-9$,which store spermatozoa received during copulation.
$2$. Testis sacs: Two pairs located in segments $10$ and $11$,containing the testes.
$3$. Seminal vesicles: Two pairs located in segments $11$ and $12$,where sperm mature.
$4$. Spermiducal funnels: Located in segments $10$ and $11$,which collect sperm.
$5$. Vasa deferentia: $A$ pair of ducts running from segment $11$ to $18$ that transport sperm.
$6$. Accessory glands: Present in segments $17$ and $19$.
$7$. Common prostatic and spermatic duct: Opens to the exterior on the $18^{th}$ segment.
$8$. Ovaries: $A$ pair of ovaries is present in the $13^{th}$ segment.
$9$. Ovarian funnels: Located beneath the ovaries,leading into the oviducts which open on the $14^{th}$ segment.