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Attempt either (a) or (b) :
(a) (i) Name an organ that helps in the formation of male germ cells in humans and also mention the condition that favours the formation of male germ cells.
(ii) In male reproductive system, write the pathway followed to deliver male germ cells to the site of fertilisation.
(iii) Mention the main physical feature of the male germ cell that helps it move towards the female germ cell.
(a) (i) Name an organ that helps in the formation of male germ cells in humans and also mention the condition that favours the formation of male germ cells.
(ii) In male reproductive system, write the pathway followed to deliver male germ cells to the site of fertilisation.
(iii) Mention the main physical feature of the male germ cell that helps it move towards the female germ cell.
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(a) (i)
* Organ - Testes (1 Mark)
* Conditions - Requires a lower temperature than the normal body temperature/Secretion of testosterone. (1 Mark)
(ii) The sperms formed in the testes are carried by Vas deferens and delivered to urethra (Common passage for both sperms and urine). / Testes $\rightarrow$ Vas deferens $\rightarrow$ Urethra (2 Marks)
(iii) Long tail of sperms. (1 Mark)
OR
(b) (i)
* Mechanical barrier / Female condom (Diaphragm)/ similar covering worn in vagina. (2 Marks)
* Oral contraceptives/ Oral pills
* Copper - T/loops. (Any two methods, Any other method)
(ii) Surgical methods
* Vas deferens in the male is blocked / Vasectomy (2 Marks)
* Fallopian tube in the female is blocked /Tubectomy
(iii)
* Bacteria - Gonorrhoea / Syphilis (any other example) (½ Mark)
* Virus - Warts / AIDS (any other example) (½ Mark)
* Organ - Testes (1 Mark)
* Conditions - Requires a lower temperature than the normal body temperature/Secretion of testosterone. (1 Mark)
(ii) The sperms formed in the testes are carried by Vas deferens and delivered to urethra (Common passage for both sperms and urine). / Testes $\rightarrow$ Vas deferens $\rightarrow$ Urethra (2 Marks)
(iii) Long tail of sperms. (1 Mark)
OR
(b) (i)
* Mechanical barrier / Female condom (Diaphragm)/ similar covering worn in vagina. (2 Marks)
* Oral contraceptives/ Oral pills
* Copper - T/loops. (Any two methods, Any other method)
(ii) Surgical methods
* Vas deferens in the male is blocked / Vasectomy (2 Marks)
* Fallopian tube in the female is blocked /Tubectomy
(iii)
* Bacteria - Gonorrhoea / Syphilis (any other example) (½ Mark)
* Virus - Warts / AIDS (any other example) (½ Mark)