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प्रश्न
Give scientific reason.
There is a menopause when women are 45-50 years old.
उत्तर
- The natural cessation of menstruation that occurs between the age of 45-50 years is known as menopause.
- Menopause occurs as the secretion of hormones controlling the functions of the female reproductive system either stops or becomes irregular.
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संबंधित प्रश्न
Describe the process of spermatogenesis with the help of diagram.
Explain two main process in sexual reproduction.
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Identify the given image and label its parts marked as a, b, c and d
Which of the following enter the maturation phase of oogenesis?
500 spermatozoa are formed from ____________ secondary spermatocytes.
Identify the longest period of menstrual cycle.
Which of the following events take place during spermatogenesis?
How many sperms are formed from a secondary spermatocyte?
There is no cell division involved in ______.
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.
Which of the following is a primary sex organ of female?
The prostate gland and seminal vehicle perform the function of ______.
What does figure represent?
In human females, meiosis II is not completed until:
Capacitation refers to changes in the ______.
Process of maturation and development of sperms ______.
The diagram given below shows the various steps in spermatogenesis.
- Name the parts labelled '1', '2' and '3'.
- Name the process by which part '3' changes to part '4'.
