The correct option is D Seven The number of sterns in a female cockroach is seven. The abdomen in both males and females consists of 10 segments. In females, the 7th sternum is boat-shaped and together with 8th and 9th sterna form a genital pouch whose anterior part contains female gonopore, spermathecal pores, and collateral glands.
So the correct answer is "Seven".
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