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

Write two major functions of ovary.

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प्रश्न

Write two major functions of ovary.

अति संक्षिप्त उत्तर
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उत्तर

  1. They produce female gametes called ova by the process of oogenesis.
  2. The growing Graafian follicles secrete the female sex hormone called estrogen. Estrogen aids the development of secondary sex characteristics in females.
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अध्याय 2: Human Reproduction - EXERCISES [पृष्ठ ४०]

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एनसीईआरटी Biology [English] Class 12
अध्याय 2 Human Reproduction
EXERCISES | Q 4. b. | पृष्ठ ४०
नूतन Biology [English] Class 12 ISC
अध्याय 2 Human Reproduction
NCERT EXERCISES | Q 4. (ii) | पृष्ठ ११६

संबंधित प्रश्न

Name the function of the following:

Fimbriae


Where in the fallopian tube does fertilization occur in humans?


State the function of Fallopian tubes.


Fill in the blank:

The time between fertilisation and birth is called _________.


Choose the correct answer:
Cervix is a part of ________________


Name the following:
The separation of the foetus from the mother's body.


Define the following:    
Parturition 


Explain the term Graffian follicle.


Name the Following

The term used for the mature follicles.


Give Technical Term:

What term is used for the arrest of reproductive capacity in females?


Which of the following are accessory ducts of female reproductive system?


______ pollen mother cells should undergo meiotic division to produce 64 pollen grains.


Contraction of which muscles are responsible for causing labour during parturition?


Identify the odd one from the following.


Figure A shows the front view of the human female reproductive system and Figure B shows the development of a fertilized human egg cell

Figure A

Figure B

Identify the correct stage of development of the human embryo (Figure B) that takes place at the sites X, Y, and Z respectively in the human female reproductive system (Figure A).

Choose the correct option from the table below:

  X Y Z
A Morula Fertilized egg Blastocyst
B Unfertilized egg Fertilized egg Morula
C Blastocyst Fertilized egg Unfertilized egg
D Fertilized egg Morula Blastocyst

Tubectomy is carried out by blocking the ______ 


Read the following and answer from given below:

During copulation, semen is released by the penis into the vegina. The motile sperms swim rapidly, fuse with the ovum in the ampullary region, resulting in fertilization. The haploid nucleus of sperm fuses with that of the ovum to form a diploid zygote.

Select the correct sequence of various physical and chemical events that take place during fertilisation.

P. Fusion of cortical granules with the plasma membrane of secondary oocyte.

Q. Formation of fertilization cone to receive sperm.

R. Release of sperm lysin from acrosome.

S. Mixing up of chromosomes of a sperm and an ovum.


Capacitation occurs in:


What is the other name for fallopian tubes?


Match the following:

Ovaries Bean shape
Fallopian tubes Almond shape
Uterus Funnel – shape
Kidney pear-shaped

Female reproductive organs and associated functions are given below in column A and B. Fill the blank boxes.

Column A Column B
Ovaries Ovulation
Oviduct a
b Pregnancy
Vagina Birth

The vaginal orifice is covered by a fold of membrane called hymen ______.


Given below is a certain situation. Analyze and describe its possible impact on a person:

Placenta does not attach to the uterus optimally.


Describe the female reproductive systems in humans.


The ______ is also called the womb.


Rewrite the terms in the correct order so as to be in a logical sequence.

Sperm duct, coitus, sperm, vagina, urethra.


Which ovarian hormone supports pregnancy?


Which part of the fallopian tube is the wider, curved middle section and the site of fertilisation?


Which structure is a thin membrane partially covering the vaginal opening and has variable presence?


What is formed when tubules of each mammary lobe join?


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