| Column I | Column II |
| A. The Pill | 1. Prevents sperms reaching cervix |
| B. Condom | 2. Prevents implantation |
| C. Vasectomy | 3. Prevents ovulation |
| D. Copper-T | 4. Semen contains no sperms |
A) A-3, B-4, C-1, D-2
B) A-2, B-3, C-1, D-4
C) A-3, B-1, C-4, D-2
D) A-4,B-1,C-2,D-3
Correct Answer: C
Solution :
(i) Pills also called contraceptive pills contain small closes of either progestogens or progestogen-oestrogen combinations. They inhibit ovulation and implantation. (ii) Condoms are made of thin rubber/latex sheath used to cover the peins in the male or vagina and cervix in the female just before coitus. So that the ejaculated semen is not released in the female reproductive tract, thus preventing sperms reaching cervix. (iii) In vasectomy, a small cut on the scrotum, thus blocking gamete (sperm) transport. However semen is a collection of secretions from the seminal vesicles, prostate gland. (iv) Copper-T is an intrauterine device, which is inserted by doctors in the uterus through vagina. The copper ions released by them suppress sperm motility and also make the uterus unsuitable for implantation.
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