Describe the female reproductive system of cockroach.
Answers
Answer:
Female Reproductive System: The female reproductive system of cockroach consists of two large ovaries. The ovaries lie laterally in the 2nd – 6th abdominal segments. ... Oviducts from each ovary unite into a single median oviduct. This is also called vagina and it opens into the genital chamber.
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Question
Describe the female reproductive system of cockroach.
Answer
◇The female reproductive system of cockroach consists of a pair of ovaries, vagina, genital pouch, colleterial glands, spermathecae and the external genitalia.
◇A pair of ovaries lies laterally in the 2nd and 6th abdominal segment.
◇Each ovary is formed of a group of eight ovarian tubules or ovarioles, containing a chain of developing ova.
◇The lateral oviducts of each ovary unite into a broad median common oviduct known as vagina, which opens into the genital chamber.
◇The vertical opening of the vagina is the female genital pore.
◇A pair of spermathecae is present in the 6th segment, which opens by a median aperture in the dorsal wall of the genital pouch.
◇During copulation, the ova descend to the genital chamber, where they are fertilized by the sperms.
◇A pair of white and branched colleterial glands present behind the ovaries forms a hard egg case called Ootheca around the eggs. Genital pouch is formed by the 7th 8th and 9th abdominal sterna.
◇The genital pouch has two chambers, a genital chamber into which the vagina opens and an oothecal chamber where oothecae are formed.
◇Three pairs of plate like chitinous structures called gonapophyses are present around the female genital aperture. These gonapophyses guide the ova into the ootheca as ovipositors.
◇Ootheca is a dark reddish to blackish brown capsule contains nearly 16 fertilized eggs and dropped or glued to a suitable surface, of high relative humidity near a food source.