Question

Draw a labelled diagram of a sectional view of human seminiferous tubule.
(b) Differentiate between gametogenesis in human males and females on the basis of
(i) time of initiation of the process.
(ii) Products formed at the end of the process.

Answer 1

`{:("Sepermatogenesis","Oogenesis"),(1. " It takes place in the seminiferous tubules of the tastes by the repeated division of spermatogonia in male "," 1. It take place in the Graafian follicles of the overy by the repeated division of oogonia in the female"),("2.Spermatogenesis starts at the age of puberty due to significant increases in the secretion of gonadotropin releasing hormone. These are of two types luteinizing hormone follicle stimulating hormone."," 2. Oogenesis is intitiated during the embryonic development stage. When a couple of million gameta mother cells are formed within foetal overy." ),("3.It occurs in four stages spermatogenesis "to" primary spermatocytes "to`1^(st)` "meiotic division "to" secondary spermatocytes "to`2^(2nd)` "meiotic division "to" spermatids "to" differntiation "to" spermatozoa. Spermatogenesis involves the maturation of spermatids in to sperms. Primary spermatocytes give rise to four spermatozoa."," 3.It occurs in theree stages Oogonia "to" Mitosis Primary oocyte : "to" 1st meiotic division "to" secondary oocyte "to" ovum. Primary oocyte gives rise to one ovum only and three Polar-bodies . Ovum thus, formed are non-motile and generally full of food reserves."):}`