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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
The process of release of the ovum from a mature follicle is called ______.
In meiosis, the number of chromosomes becomes ___________.
Give scientific reason.
Older women are more likely to give birth to children with some abnormalities.
Answer the following type of question Assertion (A) and Reason (R).
(A) - In human males, testes are extra-abdominal and lie in scrotal sacs.
(R) - Scrotum acts as a thermoregulator and keeps the temperature lower by 2°C for normal sperm production.
Mention the differences between spermiogenesis and spermatogenesis.
Define gametogenesis.
Which of the following correctly describes the secondary oocyte?
Identify the correct stages (P - S) in the given diagram of spermatogenesis.
Draw a labelled diagram of a Graafian Follicle.
How many sperms are formed from a secondary spermatocyte?
After ovulation, Graafian follicle regresses into ______.
Identify the wrong statement from the following.
Spermiation is the process of the release of sperm from ______.
Gray crescent is the area ______.
The nutritive cells found in seminiferous tubules are ______.
Which of the following groups of cells in the male gonad, represent haploid cells?
Fetal sex can be determined by examining cells from amniotic fluid looking for:
The region of the root tip whose cells undergo rapid elongation and enlargement and are responsible for the growth of the root in length is called the:
What is spermatogenesis?
In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
