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(a) What is puberty ? Who attains puberty at an earlier age in human beings : male or female (boy or girl) ?

(b) Mention two functions each of 

(i) human testes, and 

(ii) human ovaries.

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(a) The age at which the sex hormones begin to be produced and the boy and girl become  sexually mature (able to reproduce) is called puberty. Females attain puberty at an age of 10-  12 years.  

(b)  (i) The function of testes is to make sex cells called sperms and to make sex hormone called  testosterone.  

(ii) The function of the ovaries is to make mature female sex cell called ova or egg and also to  make female sex hormones called oestrogen and progesterone.

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