KCET 2018 Biology Solved Paper

→ Surgical sterilization is a procedure that renders an individual incapable of further reproduction, hence is a permanent method of birth control. In males, it is known as vasectomy and in females, it is known as tubectomy or tubal ligation
→ Barrier methods use a physical barrier and are designed to prevent sperm from gaining access to the uterine cavity and fallopian tubes. They are available for both males and females. Among the barrier methods are the male condom, vaginal pouch, diaphragm and cervical cap
→ Immediately after parturition, during period of lactation, there is absence of menstruation. As long as breastfeeding is continued, chances of pregnancy are extremely slim. This is called lactational amenorrhea.
→ Oral contraceptives (the pill) are tablets that contain hormones (either progestogens or progestogen-oestrogen combinations) designed to prevent pregnancy. These pills should be taken daily for 21 days starting within the first five days of menstruation