(A) (i) Name three techniques/devices used by human females to avoid pregnancy. Mention the side effects…
(A) (i) Name three techniques/devices used by human females to avoid pregnancy. Mention the side effects caused by each.
(ii) What will happen if in a human female (a) fertilisation takes place, (b) an egg is not fertilised ?
Solution
(A)
(i) Chemical Method/Oral pills
Side effects: Change the hormonal balance of the body.
Barrier method / Loop / Copper–T
Side effects: Irritation in uterus.
Surgical method / Fallopian tube in female is blocked;
Side effects – may cause infections.
(ii)
(a) Fertilized egg/zygote gets implanted in the lining of uterus and starts dividing.
(b) If the egg is not fertilized, the thick and spongy lining of the uterus breaks and comes out through the vagina as blood and mucous.