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Why does menstruation occur?
Science
Science

Class 10

NCERT

Publisher:
NCERT
Subject:
Science
1

Chapter 1: Chemical Reactions and Equations

34 questions

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2

Chapter 2: Acid,Bases and Salts

39 questions

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3

Chapter 3: Metals and Non-metals

38 questions

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4

Chapter 4: Carbon and its Compound

24 questions

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5

Chapter 5: Periodic Classification of Elements

30 questions

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6

Chapter 6: Life Processes

13 questions

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7

Chapter 7: Control and Coordination

12 questions

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8

Chapter 8: How do Organism Reproduce?

11 questions

Q1
What are the functions performed by the testis in human beings?
Q2
Why does menstruation occur?
Q3
Draw a labelled diagram of the longitudinal section of a flower. 
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9

Chapter 9: Heredity and Evolution

12 questions

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10

Chapter 10: Light -Reflection and Refraction

34 questions

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11

Chapter 11: The Human Eye and Colourful World

18 questions

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12

Chapter 12: Electricity

49 questions

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13

Chapter 13: Magnetic Effects of Electric Current

39 questions

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14

Chapter 14: Sources of Energy

24 questions

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15

Chapter 15: Our Environment

9 questions

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16

Chapter 16: Sustainable Management of Natural Resources

7 questions

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Question
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Solving time: 3 mins

Why does menstruation occur?

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Science (NCERT)

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Menstrual cycle refers to female reproductive cycle characterized by regularly occurring changes in uterine lining and the loss of blood and tissue during this cycle is known as menstruation. The cycle includes egg maturation and preparation of uterus for implantation by thickening of endometrium under hormonal regulation. In absence of egg fertilization, egg rupture is followed by disintegration of uterine lining (endometrium). Since, uterine wall is rich in blood capillaries and tissues, it’s shedding off results in release of blood and tissues which come out of vagina in menses. 
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Practice more questions from Science (NCERT)

Q1
What are the functions performed by the testis in human beings?
Q2
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Q3
Draw a labelled diagram of the longitudinal section of a flower. 
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Practice questions from Science (NCERT)

Question 1
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Which of the following is not a part of the female reproduction system in human beings?
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How do Organism Reproduce?

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Asexual reproduction takes place through budding in:
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The anther contains:
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How do Organism Reproduce?

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Book:

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What are the advantages of sexual reproduction over asexual reproduction?
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How do Organism Reproduce?

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Practice more questions from How do Organism Reproduce?

Question 1
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The migration of pollen grains to stigma is called as
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How do Organism Reproduce?

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Question 2
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The ability of a cell to divide into several cells during reproduction in Plasmodium is called
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Question 1: In the list of organisms given below, those that reproduce by the asexual method are (i) banana (ii) dog (iii) yeast (iv) Amoeba
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How do Organism Reproduce?

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Question Text
Why does menstruation occur?
TopicHow do Organism Reproduce?
SubjectScience
ClassClass 10
Answer TypeText solution:1
Upvotes83