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प्रश्न
Give scientific reason.
There is a menopause when women are 45-50 years old.
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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
Explain the development of a secondary oocyte (ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.
The process of release of the ovum from a mature follicle is called ______.
Draw a labelled diagram of sperm.
In case of sexual reproduction, newborn show similarities about characters. Explain this statement with suitable examples.
Explain two main process in sexual reproduction.
Expand the acronym.
LH
Expand the acronym.
hCG
Which of the following occurs during maturation phase of spermatogenesis?
How many functional sperms and how many ova will be formed by a primary spermatocyte and a primary oocyte.
Cavity of graafian follicle is ______.
At the time of organogenesis, genes regulate the process at different levels and at different time due to ______.
Which one is released from the ovary?
What does the figure represent?
In the process of fertilization, this is true:
Capacitation refers to changes in the ______.
The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
Select a correct pair of cells with identical set of chromosomes.
During oogenesis the meiotic division is arrested at ______ before fertilization.
In which organ does oogenesis take place?
