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प्रश्न
Ovulation is induced by a hormone called ______.
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उत्तर
Ovulation is induced by a hormone called luteinising hormone (LH).
Explanation:
LH (luteinising hormone) acts on the leydig cells and stimulates the synthesis and secretion of androgens. Androgens, in turn, stimulate the process of spermatogenesis.
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संबंधित प्रश्न
The following is the illustration of the sequence of ovarian events (a − i) in a human female
(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.
(iii) Explain the changes that occur in the uterus simultaneously in anticipation.
(iv) Write the difference between ‘c’ and ‘h’.
(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.
Male and female gametes are ______.
Define spermiation.
What is oogenesis?
Name the functions - Acrosome of sperm.
Explain the structure of secondary oocyte.
Describe the process of spermatogenesis with the help of diagram.
In meiosis, the number of chromosomes becomes ___________.
Give scientific reason.
There is a menopause when women are 45-50 years old.
If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?
The glandular accessory organ which produces the largest proportion of semen is ____________.
Describe the structure of the human ovum with a neat labelled diagram.
Which of the following correctly describes the secondary oocyte?
Identify the longest period of menstrual cycle.
Identify the CORRECT sequence of events.
Identify the enzyme released by the sperm which has lytic activity.
What is the location of oogenesis?
First meiotic division is observed in ____________.
Corona radia is made up of ______.
Which among the following has 23 chromosomes?
Which of the following groups of cells in the male gonad, represent haploid cells?
During oogenesis, each diploid cell produces ______.
Which of the following is a primary sex organ of female?
Fetal sex can be determined by examining cells from amniotic fluid looking for:
3-celled male gamete develops in:
How many spermatozoa are formed from one secondary spermatocyte?
At the onset of puberty, gonadotropin releasing hormone is secreted by ______.
In which structures does spermatogenesis occur?
