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प्रश्न
What is oogenesis?
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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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संबंधित प्रश्न
Give the name and function for ‘A’ and ‘B’ from the diagram given below
Women are often blamed for producing female children. Consequently, they are ill-treated and ostracized. How will you address this issue scientifically if you were to conduct an awareness programme to highlight the values involved?
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.
Ovulation is induced by a hormone called ______.
The fusion of the male and the female gametes is called ______.
Explain the structure of secondary oocyte.
If newborns are produced at the age of menopause, they may be with some abnormalities. Why?
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?
Identify the given image and label its parts marked as a, b, c and d
Which of the following are known as the nourishing cells present in the seminiferous tubules?
Identify the proper order of spermatogenesis and choose the correct option.
Identify the enzyme released by the sperm which has lytic activity.
Which among the following has 23 chromosomes?
The head of the epididymis at the head of the testis is called ______.
Which of the following groups of cells in the male gonad, represent haploid cells?
1st polar body is formed at which stage of oogenesis?
After the release of the secondary oocyte, the Graafian follicle develops into ______.
Mark the odd one.
Follicular atresia is:
Germ cells present in the seminiferous tubules undergo ______
Draw a neat and labelled diagram of spermatogenesis.
Process of maturation and development of sperms ______.
Name the germinal layers from which the following organs develop: Tongue, heart, sweat glands, vagina, mammary glands, kidney.
Answer the following:
How many primary spermatocytes and oocytes are required for the formation of 100 spermatozoa and ova?
The diagram given below shows the various steps in spermatogenesis.
- Name the parts labelled '1', '2' and '3'.
- Name the process by which part '3' changes to part '4'.
Match List - I with List - IІ.
| List - I | List - II |
| A. Head | I. Enzymes |
| B. Middle piece | II. Sperm motility |
| C. Acrosome | ΙII. Energy |
| D. Tail | IV. Genetic material |
Choose the correct answer from the options given below:
Complete the analogy with respect to the structure of sperm.
Nebenkern : ‘X’ : : Acrosome is formed from : ‘Y’
