Reproduction in Humans
Male reproductive system 1.Sperms have a tail whereas eggs do not. Why so? (C.B.S.E. 2007) 2.Why does failure of testes to descend into scrotum produce sterility? 3.Mention the difference between spermiogenesis and spermiation.(C.B.S.E. 2012) 4.Where is acrosome present in humans? Write its functions. (C.B.S.E. 2012) 5.Mention the location and function of Leydig cells in humans. (C.B.S.E. 2012) 6.Mention the function of mitochondria in sperm. (C.B.S.E. 2012) (a) Give a schematic representation of spermatogenesis in humans. (b) At which stage of life does gametogenesis begin in human male? (c)Describe the structure of a human sperm. Fate of Germ Layers List the following events observed in human reproduction in chronological order. Fertilization, gametogenesis, insemination, gestation, parturition, implantation. State the significance of cervix in the female reproductive system. What is the reason for the absence of menstrual cycles during conception or pregnancy? Fill up the missing