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प्रश्न
Read the following passage and answer the question that follows:
Rahini and her parents were watching a television programme. An advertisement flashed on the screen which was promoting the use of sanitary napkins. Rahini’s parents suddenly changed the channel, but she objected to her parents and explained the need and importance of such an advertisement.
What is first menstruation called? When does it occur?
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उत्तर
The first menstruation is called Menarche. In human females, the menstrual cycle starts at the age of 11 – 13 years which marks the onset of puberty.
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संबंधित प्रश्न
Identify True/False statement. Correct false statement to make it true.
Menstrual cycle ceases during pregnancy.
Draw a graafian follicle and label antrum and secondary oocyte.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Menarche is the stoppage of menstruation.
Identify the phase of the menstrual cycle during which there is a peak in the level of progesterone.
In humans, the menstrual cycle is generally of ______.
How long does the secretory phase of the menstrual cycle last?
Choose the correct order of phases of the menstrual cycle.
Corpus luteum ______.
Hormones responsible for menstrual cycle are produced from ______.
The figure show a section of human ovary. Select the option which gives the correct identification of either A or B with function/characteristic.
