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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. Presence or absence of hymen is not a reliable indicator of virginity or sexual experience.

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प्रश्न

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

Presence or absence of hymen is not a reliable indicator of virginity or sexual experience.

सत्य या असत्य
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उत्तर

This statement is true.

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अध्याय 2: Human Reproduction - EXERCISES [पृष्ठ ४०]

APPEARS IN

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

संबंधित प्रश्न

The diagram alongside is the vertical section of female reproductive organs. Study the diagram and answer the questions that follow:

  1. Name the fully developed part of ovary containing the ovum.
  2. Name the organ of the female body in which the foetus develops. 
  3. What is ovulation? 
  4. Which two hormones are secreted by ovary? 


Name the following:
The parts of the ovary containing mature ovum.


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


State the Location:

Bartholin’s glands.


Write the functional activity of the following structure:

Graafian follicle


Observe the diagram and answer the following questions.

  1. Label the indicated parts 1, 2 and 3 in the diagram.
  2. Where the fertilization of ovum occurs?
  3. Where does the embryo get implanted after fertilization?

Identify the term used for isthmus.


The pair of thin folds present inner to the labia majora is ____________.


The development of lactiferous tubules during pregnancy is dependent on ____________.


Mark the CORRECT sequence of structures in the breast from the inner to the outer side.


A sac shaped like an upside down pear with a thick lining and muscles in the pelvic area where a fertilized egg or zygote comes to grow into a baby is called ______.


Ovulation occurs under the influence of ______.


Bartholin’s glands are situated ______.


Endometrium undergoes cyclical changes and help in uterine movements.


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

The fertilization of the human egg by the sperm takes place in ______  


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.

What is the signifacance of fertilisation?


Read the following and answer from given below:

Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.

what is the function of hormones FSH?


Which among the following is not the function of testes at puberty?

  1. formation of germ cells
  2. secretion of testosterone
  3. development of placenta
  4. secretion of estrogen

What changes are observed in the uterus if fertilisation does not occur?


What changes are observed in the uterus subsequent to the implantation of a young embryo?


Capacitation occurs in:


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

Explain how the uterus and placenta provide necessary conditions for proper growth and development of the embryo after implantation?


The______ is also called the womb.


The ______ is also called the womb.


Where does the zygote implant?


After puberty, how often do the ovaries release one ovum?


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