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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Identify True/False statement. Correct false statement to make it true. Menstrual cycle ceases during pregnancy.

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प्रश्न

Identify True/False statement. Correct false statement to make it true.

Menstrual cycle ceases during pregnancy.

चूक किंवा बरोबर
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उत्तर

This statement is true.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Human Reproduction - EXERCISES [पृष्ठ ४०]

APPEARS IN

एनसीईआरटी Biology [English] Class 12
पाठ 2 Human Reproduction
EXERCISES | Q 16. (f) | पृष्ठ ४०
नूतन Biology [English] Class 12 ISC
पाठ 2 Human Reproduction
NCERT EXERCISES | Q 16. (f) | पृष्ठ ११७

संबंधित प्रश्‍न

Describe the role of pituitary and ovarian hormones during the menstrual cycle in a human female.


Name the function of the following:

Corpus luteum


the biological/technical terms for Fixing of developing zygote on the uterine wall.


Give a significant point of difference between the oestrous and menstrual cycles.


How can the scientific understanding of the menstrual cycle of human females help as a contraceptive measure?


Differentiate between the following pair: 

Menarche and menopause 


Define: Menarche


Meanrch, menstrual cycle, and menopause are controlled by ______.


Explain the ovarian cycle with its different phases.


Explain the importance of cleanliness during the time of menstrual cycle in girls.


Painful menstruation is termed as ____________.


Which one of the following menstrual irregularities is correctly matched?


Calculate the number of spermatozoa produced by a single primary spermatocyte.


All occur during follicular phase of menstrual cycle, EXCEPT


On the fourteenth day of the menstrual cycle the female gamete released is _____.


Secretion of progesterone by corpus luteum is initiated by ______.


Withdrawal of which of the following hormones is the immediate cause of menstruation?


Distinguish between pollination and fertilisation. Mention the site and product of fertilisation in a flower.

Draw a neat, labelled diagram of a pistil showing pollen tube growth and its entry into the ovule.


Menstrual flow occurs due to lack of ______.


At which stage of the menstrual cycle, both LH and FSH are high?


The level of progesterone is high at which phase in the menstrual cycle?


Identify the correct statement from the following:


A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both the events.


Given below is a flow chart showing ovarian changes during menstrual cycle. Fill in the spaces giving the name of the hormones responsible for the events shown.


Answer the following questions by observing the diagram of menstrual cycle: 

  1. What is the period of menstruation?
  2. On which day does ovulation occur during the menstrual cycle?
  3. In the menstrual cycle which reproductive organs undergo changes?
  4. Which period is said to be the period of regeneration of endometrium?
  5. Which period is said to be the period of secretions of glands in endometrium?

Complete the table:

Number Type No. of pairs Region
C1C8 Cervical ______ Neck
T1T12 ______ 12 pairs ______
L1L5 Lumbar ______ Lower back
S1S5 ______ 5 pairs ______
CO1 Coccygeal ______ ______

The onset of menstruation in a human female is called ______.


The egg is passed down through the oviduct by muscular contractions.


Match Column I and Column II with respect to the menstrual cycle.

Column I Column II
i. Menstrual phase c. Secretion of inhibin
ii. Follicular phase b. Development of the primary follicle
iii. Ovulatory phase a. Rapid secretion of LH
iv. Secretory phase d. Secretion of estrogen

Choose the correct option.


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