Male Reproductive System of Cockroach/Grasshopper Male Cockroach: Antennae are longer than body and third segment shorter than second. Male reproductive system consists of a pair of testes, vas deferens, ejaculatory duct, utricular gland and phallic gland. The Male Reproductive Organs: i. Testes: They are a pair of faintly […] Copulation occurs at night during the summer. Male reproductive system: 1. 33). The female cockroach emits a specific, volatile, odorous sex attractant or pheromone to draw the male to her for mating. 9. Laying Eggs. Male reproductive system consists of a pair of testes lying one on each in 4th and 6th segments. 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. The testes lie on each lateral side in the 4th – 6th abdominal segments. MEDIUM. each lobe divided into many lobules (b) Vasa deferentia - A vasa deferense arises from each testis these open in an ejaculatory duct. The cockroaches are dioecious (unisexual) animals. Reproductive System Cockroaches are dioecious and sex organs are well developed. The male reproductive system of cockroach consists of the following organs. Cockroach - "Unisexual" Male reproduction system:-(a) 1-pair of testis in "3-6" abdominal segment. View Answer. Reproductive System of Cockroach: The sexes are separate. A thin vas deferens arises from each testis. Vas deferens arises from each testis, opens into ejaculatory duct through seminal vesicle. View Answer. 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 female reproductive organ is comprised of a pair of oviducts, vagina, collaterial gland, gonapophyses and spermatheca (fig. Mesosternum is partly divided and ninth sternum is visible. Abdomen is narrow and a seventh sternum undivided. Male Reproductive System It is located in the posterior part of the abdomen. 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. 2. After fertilization, a female American cockroach produces an egg case known as an ootheca. Reproductive System in Cockroach ; 1. A pair of anal styles (clasper) is present. Study the given figure of reproductive system of male cockroach. In which of the labelled parts are the sperms stored? Reproductive System: Cockroaches are dioecious. It opens into ejaculatory duct through seminal vesicle. Consider the following four statements (i)- (iv) and select the correct option stating which ones are true (T) and which ones are false (F) 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. each testis formed of "3 or 4 lobes". These attractants are detected by the chemoreceptors located in the antennae of the male. Male Reproductive System: The male reproductive system of cockroach consists of a pair of testes. Female reproductive system consists of a pair of ovaries, oviduct, vagina, genital chamber and colleterial glands. 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. In Cockroach an ovary is formed of ovarioles. REPRODUCTIVE SYSTEM. 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