Question

Female reproductive system of cockroach segments

Answer 1

The female reproductive system of cockroach consists of a pair of ovaries, vagina, genital pouch, collaterial glands, spermathecae and the external genitalia ...

Answer 2

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❤. FEMALE REPRODUCTIVE SYSTEM ❤

• It consists of a pair of ovaries , oviducts , vagina , spermathecae, colleterial glands and genital pouch.

❤. OVARIES ❤

• A pair of large ovaries are preseng layerally in 2,3,4,5,6segments surrounded by fat bodies.
• Each ovary has eighg ovarioles.
• Each ovariole has tapering part, the germarium andbwider pary, the vitellarium.
• Germarium has ova at different stages of development.
• Vitellarium has mature ova with yolk.

❤. OVIDUCTS ❤

• The ovarioles unite to form a short wide oviduct vagina.
• The oviducts open into a short median vagina.
• Female genital pore is vertical slit in vagina.
• Spermathecal papilla in dorsal part of gential pouch.

❤. COLLETERIAL GLANDS ❤

• A pair of colleterial glands are preseng behind ovaries opening into genital pouch.
• Their secretion forms egg case or ootheca around eggs.
• Genital pouch is formed 7th , 8th and 9th sternum.
• 7th sternum forms floor of the pouch.
• 8th sternum forms the anterio wall of thepouch.
• 9th sternum forms the anterior roof of the pouch.
• Anterior part of genital pouch is the gynatrium and posterior part is oothecal chamber.
• Gonapophyses are three pairs of plate like chitinious structures around female genital pore.
• Gonapophyses acts as ovipositors and hep in copulation.