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

What is oogenesis?

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प्रश्न

What is oogenesis?

अति संक्षिप्त उत्तर
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उत्तर

Oogenesis is the process of forming a mature female gamete (ovum). It occurs in the ovaries of the female reproductive system. Oogenesis is a discontinuous process; it begins before birth, stops mid-process, and only resumes after menarche.

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पाठ 2: Human Reproduction - EXERCISES [पृष्ठ ४०]

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एनसीईआरटी Biology [English] Class 12
पाठ 2 Human Reproduction
EXERCISES | Q 12. a. | पृष्ठ ४०
नूतन Biology [English] Class 12 ISC
पाठ 2 Human Reproduction
NCERT EXERCISES | Q 12. (i) | पृष्ठ ११६

संबंधित प्रश्‍न

How is 'oogenesis' markedly different from 'spermatogenesis' with respect to the growth till puberty in the humans?


Explain the development of a secondary oocyte (ovum)  in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.


Define spermiogenesis.


In meiosis, the number of chromosomes becomes ___________.


Give scientific reason.

There is a menopause when women are 45-50 years old.


The male sex hormone testosterone is secreted from ____________.


Mammalian egg is ____________.


Mention the differences between spermiogenesis and spermatogenesis.


Identify the given image and label its parts marked as a, b, c and d


Four primary spermatocytes give rise to ______.


First meiotic division is observed in ____________.


Find out the CORRECT sequence of spermatogenesis.


Conversion of spermatid into sperm is called as _______.


How many sperms are formed from a secondary spermatocyte?


Extrusion of second polar body from egg nucleus occurs ______.


Connective tissue around seminiferous tubules possess endocrine cells called ______.


Which of the following groups of cells in the male gonad, represent haploid cells?


The prostate gland and seminal vehicle perform the function of ______.


Select the correct sequence of stages of spermatogenesis in a human male ______.


Aquatic animals in which fertilisation occurs in water are said to be


Fetal sex can be determined by examining cells from amniotic fluid looking for:


Human milk differs from cow's milk because human milk contains:


Which of the following cells during gametogenesis is normally diploid?


Which type of cell division forms spermatids from the secondary spermatocytes?


Given below are two statements.

  • Statement I: The spermatids are non-motile and non-functional which get transformed into functional spermatozoa by the process of spermiogenesis.
  • Statement II: During the process of this change, the spermatids remain held to each other and to Leydig's cells by cytoplasmic bridges.

In light of the above statements, select the correct answer from the option given below.


What is spermatogenesis?


During oogenesis the meiotic division is arrested at ______ before fertilization.


Which of the following phases are shared by both spermatogenesis and oogenesis?


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