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(a) Explain the process of spermatogenes...

(a) Explain the process of spermatogenesis in humans.

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(1) It takes in the seminferus tubules of the testes by the repeated division of spermtogonia in male.
(2) Spermatogenesis starts at the age of pubertu due to significant increases in the secretion of gonadotropi9n releasing hormone. These are of two types luteininzing hormone fullicle stimulting hormone.
(3) It occurs in four stages spermatogensis`to` primary spermatocytes `to 1^(st)` meiotic division ` to ` secondary sepermatocytes `to 2^(nd)` meiotic dividion` to ` sepermatids `to` differentiation ` to ` spermatozoa. Spermatogenesis involves the maturation of spermatids in to sperms.
Primary spermatocytes give rise to four spermatozoa.
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Knowledge Check

  • In spermatogenesis

    A
    a primary spermatocyte produces four similar sperms while in oogenesis a primary oocyte forms
    B
    Four similar ova
    C
    Three large ova and one polar body
    D
    Two large ova and two olar bodies

  • Spermatogenesis changes

    A
    Spermatogonium into primary spermatocyte
    B
    Primary spermatocyte into secondary spermatocyte
    C
    Secondary spermatocyte into spermatid
    D
    All the above.

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