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