Biology, asked by Anonymous, 5 months ago

Describe the female reproductive system of cockroach.

Answers

Answered by Shivam273303
2

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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Answered by ItzNorah
43

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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.

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