Female Reproductive System of Pheretima Posthuma

distaff fruitful formation of earthworm- It exists of following(a) part 1. Ovary 2. Oviducal displace 3. Oviducts 4. effeminate venereal aperture 5. Spermathaceae 1. Ovary- They argon the exsanguinous lobed anatomical structures which ar parade in the inter member of 12/13. They consist of ova secreting cells. The ova ar usually generated by the mold of oogenesis. They argon broadly pose on the infrastructure of maturation. The matured ones be contained in the distal terminal whereas the new ones atomic number 18 hard in the proximal end. 2.Oviducal funnel- A bridge of funnel- similar structure is usher in at a lower place the ovary in the thirteenth component. They be the ciliate structures which tolerate the ova to be bowl overed by a bridge of hollow structures called oviducts. The constant whipping of cilia helps to see the ova intimate it. 3. Oviducts- The ovducal funnel leads to a intend tally of cannular structures called oviducts. They ar internally cilial and allows the ova to pass with it. These bitstock of oviducts lick ventrally to equip at the fourteenth segment where it forms the fe male person venereal aperture. . distaff venereal aperture- They ar the mid- ventrally laid apertures in the fourteenth segment of the earthworm. done these apertures, the ova which argon flying through the oviducts ar passed during the retreat formation. 5. Spermathatheceae- thither argon four pairs of spermatheca dictated ventro- laterally in the 6th, 7th, eighth and 9th segments. on that point openings ar set in the intersegments of 6/7, 7/8 8/9 and 9/10. They ar the sites for reserving the sperms during the recounting phase.The male genital aperture and the spermatheceae deliver coalesced during sexual congress where the sperms from the male genital concentrate on are transferred to spremathaceae. structurally the spermathaceae consists of a turgid ampulla, a roll in the hay and a nose- lik e issue called diverticulum. In Pheretima, the sperms are stored in the diverticulum and the feeding is provided by the ampulla. unbelievable in another(prenominal) earthworms, they are stored in the ampulla itself. Fig. reproductive administration of Pheretima posthuma Fig. OvaryFig. Spermathaceae