Home › UP Board Class 10 › Science › How do Organisms Reproduce › Hormonal contraceptive pills act primarily by:
Hormonal contraceptive pills act primarily by:
Answer & Solution
Correct answer: A.
1. Oral pills contain oestrogen and progesterone analogues.
2. These suppress the LH surge that triggers ovulation.
3. Without ovulation, no egg is released and pregnancy cannot occur.
_Source: NCERT Class 10 Science, Ch 7 "How do Organisms Reproduce", §7.3.4_
Related questions
A flower that has both stamens and pistils is called:Why is the male reproductive system positioned outside the abdominal cavity in a scrotum?Which of the following best explains why most STDs are spread by sexual contact?In sexual reproduction, the gamete-forming cell division is:Population control through contraception is important because uncontrolled population growWhich of the following is NOT a method of contraception?Fission divides the parent cell into two equal halves, whereas multiple fission divides itAfter delivery, the umbilical cord between mother and baby is cut. Before this, the cord c