Q23 of 57 Page 8

Differentiate between menarche and menopause.

• Menarche marks the beginning of the reproductive cycle of a female whereas menopause marks the end of the reproductive cycle. • Menarche generally takes place at puberty, i.e., at the age of 12-16 years while menopause takes place around the age of 45-50 years. • After menarche, there is an increased amount of production of female sex hormones whereas after menopause, the secretion of female sex hormones declines and sometimes completely stops.

More from this chapter

All 57 →
21 Write names of one male and female sex hormones. 22 Describe the menstrual cycle. 24 What is ovulation? 25 Write whether the following statements are true or false.
1. Fertilization is the fusion of the sperm and the ovum.
2. Duration of menstrual cycle in human female is 20 days.
3. Onset of menstruation is termed menopause.
4. In human beings, male attains puberty little later than females.