Lesson 5 ·Class 10 · Population — The Increasing Numbers and Rising Problems · Sort Lab
Controlling Population Growth — Contraception
Sorting every method in the syllabus into its correct category
Drop each method of contraception into the category it belongs to.
Sorted 0/10
All items sorted — check each bin.
Free play — sort every item into the bin it belongs in; each correct drop tells you why. Switch to when you're ready to test yourself.
Two traps. IUDs prevent implantation, not fertilisation — the egg may well be fertilised. And medical termination of pregnancy is not a contraceptive method at all: it is a last step, legal within five months of pregnancy, free at any government hospital on the woman's own request, for which even the husband's consent is not necessary.
What this lesson covers
What you do
- Pair each surgical method with the duct it cuts: tubectomy the oviduct, vasectomy the vas deferens.
- Ask which methods act before fertilisation, which act after it, and which act on the ovary.
Challenges to clear
- Place every method in its category.
- Fill the surgical bin correctly.
- Fill the Barrier methods box — the ones that simply block the sperm.
The task
Drop each method of contraception into the category it belongs to.
What this lesson covers
- Hormonal methods — Hormone preparations taken as tablets: Mala-D (An oral contraceptive pill. The hormones in it prevent the release of the egg from the ovary, so there is nothing for a sperm to fertilise.); Contraceptive tablets taken by the woman (All the hormonal preparations work the same way — they stop ovulation. Nothing is placed in the reproductive tract at all.)
- Barrier methods — Something physically stops the sperms: Condom (Nirodh) (A latex sheath used by men only. It prevents the sperms from being deposited in the vagina, so it is a barrier and not a chemical or hormonal method.); Diaphragm (A round latex cap with a coil spring, fitted deep in the vagina over the cervix. It blocks the entry of sperms into the uterus.); Spermicidal cream placed near the cervix (Sperm-killing chemicals are grouped with the barrier methods because they act in the vagina before the sperms can get any further — they kill sperms rather than altering the woman's hormones.)
- Intra-uterine devices — Fitted inside the uterus: Lippe's Loop (One of the two intra-uterine devices commonly used in India. It is fitted inside the uterus.); Copper-T (The other common Indian IUD. IUDs do not stop fertilisation — they prevent implantation of the blastocyst in the uterine wall, which is a different stage altogether.)
- Surgical methods — A duct is cut and tied: Tubectomy (Performed on a woman. The abdomen is opened and the fallopian tubes are cut and ligated with nylon thread, closing the passage of the egg.); Vasectomy (Performed on a man. A small cut in the scrotum, the vas deferens from each testis is ligated and a small piece between the two ligatures removed. It is easier, quicker and safer than tubectomy, and has no harmful effect on manliness of any kind, nor does it reduce the pleasure of intercourse or libido.)
- Natural methods — No device and no drug: The calendar method (Mating is avoided between the 9th and 21st days of the menstrual cycle. Nothing is worn, taken or fitted — hence natural.)
Hint
Two traps. IUDs prevent implantation, not fertilisation — the egg may well be fertilised. And medical termination of pregnancy is not a contraceptive method at all: it is a last step, legal within five months of pregnancy, free at any government hospital on the woman's own request, for which even the husband's consent is not necessary.