Zygotic Cleavage|Implantation And Preganancy|NCERT|Placenta|Embryo Development|Gastrulation|Parturition|Lactation

Embryo Development|Placenta |Placenta And Its Functions|Gastrulation

Who Determines Sex Of The Child|Zygotic Cleavage|Implantation And Pregnancy

Fertilisation|Embyonic Developement|Parturition|Lactation|OMR|Sex Determination|Summary

Describe the post-zygotic events leading to implantation and placenta formation in humans. Mention any two functions of placenta.

a) Explain the phenomenon of double fertilization. b) Describe the post-zygotic events leading to implantation and placenta formation in humans. Mention any two functions of placenta.

Male Reproduction System|Female Reproduction System|Menstrual Cycle|Fertilisation|Implantation|Gestation, Parturition And Lactation

Substances to cross placenta || umbilical cord || gestation period || teratogens || parturition || lactation

Stage of embryo development at which implantation occurs in human female is

Define the following terms : (1) Gastrulation (2) Implantation (3) Parturition (4) Lactation .

Male Reproductive System|Female Reproductive System|Spermatogenesis|Sperms|Oogenesis|Menstrual Cycle|Fertilization And Implantation|Parturition And Lactation