Male Reproductive System It is located in the posterior part of the abdomen. Reproductive System of Cockroach: The sexes are separate. Reproduction commences when a male cockroach backs into a female cockroach, depositing sperm. A thin vas deferens arises from each testis. Consider the following four statements (i)- (iv) and select the correct option stating which ones are true (T) and which ones are false (F) each testis formed of "3 or 4 lobes". each lobe divided into many lobules (b) Vasa deferentia - A vasa deferense arises from each testis these open in an ejaculatory duct. Reproductive System in Cockroach ; 1. Abdomen is narrow and a seventh sternum undivided. MEDIUM. Study the given figure of reproductive system of male cockroach. A thin duct called vas deferens begins from the posterior end of each testis. Laying Eggs. In Cockroach an ovary is formed of ovarioles. Vas deferens arises from each testis, opens into ejaculatory duct through seminal vesicle. 33). Male reproductive system: 1. The cockroaches are dioecious (unisexual) animals. MEDIUM. It opens into ejaculatory duct through seminal vesicle. The Male Reproductive Organs: i. Testes: They are a pair of faintly […] A pair of anal styles (clasper) is present. Reproductive System Cockroaches are dioecious and sex organs are well developed. The female cockroach emits a specific, volatile, odorous sex attractant or pheromone to draw the male to her for mating. The female carries the ootheca on her abdomen for a short time, usually a day or two. After that, she deposits it in a warm humid location. In which of the labelled parts are the sperms stored? After fertilization, a female American cockroach produces an egg case known as an ootheca. Copulation occurs at night during the summer. The testes lie on each lateral side in the 4th – 6th abdominal segments. Male Reproductive System: The male reproductive system of cockroach consists of a pair of testes. 8.3). View Answer. Cockroach - "Unisexual" Male reproduction system:-(a) 1-pair of testis in "3-6" abdominal segment. Female reproductive system consists of a pair of ovaries, oviduct, vagina, genital chamber and colleterial glands. The female reproductive organ is comprised of a pair of oviducts, vagina, collaterial gland, gonapophyses and spermatheca (fig. These attractants are detected by the chemoreceptors located in the antennae of the male. Male Reproductive System of Cockroach/Grasshopper Male Cockroach: Antennae are longer than body and third segment shorter than second. REPRODUCTIVE SYSTEM IN INSECTS Sexual dimorphism is noticed in cockroach In male cockroach, at the posterior end of the abdomen there is a pair of short segmented anal cerci and unsegmented anal styli. The male reproductive system con­sists of a pair of testes, a pair of vasa deferentia, a pair of seminal vesicles, an ejacula­tory duct, a conglobate gland and a gonop­ore (Fig 25. Reproductive System: Cockroaches are dioecious. In the male cockroach, it lies between the tergum of the tenth and the sternum of the ninth abdominal segment, and is surrounded by chitinous rods called gonapophyses which are concerned with copulation. REPRODUCTIVE SYSTEM. 2. Mesosternum is partly divided and ninth sternum is visible. In female cerci alone are present and styli are absent. The male reproductive system of Periplaneta consists of a pair of testes, a pair of vasa deferentia, an ejaculatory duct, a pair of seminal vesicles, a mushroom-shaped gland and a phallic gland. The male reproductive system of cockroach consists of the following organs. Male reproductive system consists of a pair of testes, vas deferens, ejaculatory duct, utricular gland and phallic gland. 9. View Answer. Male reproductive system consists of a pair of testes lying one on each in 4th and 6th segments. In 4th and 6th segments of anal styles ( clasper ) is present genital and! 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