SELECT * FROM question_mgmt as q WHERE id=3704 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=9 AND subId=16 AND chapterId=259 and ex_no='4' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 10th science How do Organism Reproduce? why does menstruation occur

Question:

Why does menstruation occur?

Answer:

Menstruation occurs at the time of puberty in females. Menstruation occurs to prevent the pregnancy phase. It releases the tissues which supports the foetus to grow during the pregnancy. Menstruation is the bleeding phase, where an egg released by female does not get fertilized or attached to the uterine wall then uterine lining dies due to deficiency of hormone (progesterone), and the lining of fallopian tube breaks down and then the blood oozes out from the ruptured vessels through the vaginal opening.

 


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  • Answered by Ekta Mehta
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  • Answered by Ekta Mehta
  • 4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

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